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UEFI only boot problem with L440

Q: UEFI only boot problem with L440

Hey, I recently purchached a new SSD for my L440. At the moment I'm having troubles to install Windows 7 SP1 with 64bit with the UEFI mode. The UEFI bios is set to UEFI only, with CSM enabled and the secure boot disabled. Of course I made sure that my USB stick has a UEFI bootloader in the right place. Everything works fine with my Deskop PC, however, I can not boot from my L440. Any suggestions ?

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Preferred Solution: UEFI only boot problem with L440

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I have a Dell XPS 8700 that failed Windows 10 anniversary update until UEFI secure boot was turned off. It apparently then completed but I cannot re-enable secure boot without the same boot problem advising
Recoveryyour pc/device needs to be repaired / during Windows 10 anniversary updateAn unexpected error has occurredError Code 0xc0000185you'll need to use recovery tools.   Is there a solution to enable UEFI secure boot ?
 I am using a Dell XPS 8700 pc with an SSD drive. The Windows 10 update was installingthen after one of the reboots the error above  The pc was running prior to the update and had UEFI OS , secure boot enabled,  no prior problems.I attempted to do any of the safe mode boots but none would proceed.Disabling the UEFI safe/secure boot mode apparently let the install continue and the das it did before with I believe completion of the installation of Windows 10 anniversary update.PC now shows Windows 10 home Ver 1607 ..
The problem returns if I enable UEFI secure boot and the PC stops. I would like to determine a wayto locate the problem or issue. related to the secure boot.  Using the media creation tool may justrepeat the problem once secure boot is re-enabled.
 Dell lists that they have tested XPS 8700 with this update and have not indicated problems no mention of secure boot issue.

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I have a Dell XPS 8700 that failed Windows 10 anniversary update until UEFI secure boot was turned off. It apparently then completed but I cannot re-enable secure boot without the same boot problem advising
Recoveryyour pc/device needs to be repaired / during Windows 10 anniversary updateAn unexpected error has occurredError Code 0xc0000185you'll need to use recovery tools.   Is there a solution to enable UEFI secure boot ?
 I am using a Dell XPS 8700 pc with an SSD drive. The Windows 10 update was installingthen after one of the reboots the error above  The pc was running prior to the update and had UEFI OS , secure boot enabled,  no prior problems.I attempted to do any of the safe mode boots but none would proceed.Disabling the UEFI safe/secure boot mode apparently let the install continue and the das it did before with I believe completion of the installation of Windows 10 anniversary update.PC now shows Windows 10 home Ver 1607 ..
The problem returns if I enable UEFI secure boot and the PC stops. I would like to determine a wayto locate the problem or issue. related to the secure boot.  Using the media creation tool may justrepeat the problem once secure boot is re-enabled.
 Dell lists that they have tested XPS 8700 with this update and have not indicated problems no mention of secure boot issue.

A:XPS 8700 needed UEFI secure boot disabled to complete Windows 10 anniversary update can't enable UEFI secure boot now

If your computer was running WIndows 10 without any issues prior to downloading the Anniversary update, then you would not have had to change any settings in the bios to install the update.The UEFI and Secure Boot settings are to enable booting with a USB or DVD to install Windows.
Disable Legacy Boot Mode and Enable UEFI
Start the computer and TAP the F2 key to enter the bios. Once in the bios Press F9 to Restore the bios to the Default Settings. F10 to save changes and exit. You could have a hardware problem. To run a hardare diagnostics on the computer you would start the computer and TAP the F5 key. Insert a cd/dvd in the optical drive for running the diags.

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Hello, I have a Y720 tha comes with a 1x 129 GB M2 SSD and x1 HDD, in UEFI mode. I'm currently trying to replace the M2 SSD with a newly bougth Samsung 960 EVO M2 where I would like to install Windows 10 also in UEFI mode, as it has better power management than Legacy. But I have tried booting the Windows 10 installer USB stick and the laptop does not recognize in bios. I have created the usb stick with RUFUS 2.18 (latest), choosing UEFI + GPT and Fat32 file format. Before that I also tried restoring a system backup image I created from the former M2 using AOMEI Backupper but I couldn't boot the USB utility to do so either (the same happened: Bios does not recognise it, despite creating it choosing UEFI mode) Things I have tried: 1. Disabling secure boot (although the Secure Boot Status staed "Enabled", so I used the "REset Secure Boot mode" option too...)2. Chaging Optimal OS Setting to disabled in seetings, but still no use3. Using the Novo Button on the right part of the laptop. Of course, changing boot mode to Legacy would allow me to install Windows from USB ....but in Legacy mode, which I'm trying to avo So ...is there a way to boot a UEFI usb stick to install Windows in UEFI mode from it?  thanks!

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**** This issue has been resolved ****
**** Look at Page 4, posts 4 and 5 ****
**** You need to enable Legacy MBR by Enabling Launch CSM in the EFI Setup ****

Hello all,

This is my first post. I am a Windows 7 user and now (against my will) Windows 8.

I bought an ASUS N76 laptop pre-loaded with Windows 8 so these are the new generation n76 series. The old ones come with Windows 7. Anyway...

I attempted to boot a Windows 7 ULT 64 install DVD but the install hangs on the Windows logo/flag. So...

- Windows is loading files is shown and hidden
- The animated Windows logo appears and then it just hangs....go figure

I have no idea what is going wrong. I went into the UEFI setup and the only option for my BR is EUFI boot.

I also added a "boot option" asking the EFI to boot "efi\microsoft\boot\boot.efi" or "\efi\microsoft\boot\boot.efi" but when selected (from Boot Override), the screen goes blank for a few seconds, the BR starts spinning and I am thrown back at the EFI so it looks like it cannot find the file. For path, I selected the BR device and at the end has a "\".

I have secure boot disabled. (yep, I have an option for that). So now I am left empty handed and I am stuck with Windows 8. I even put in a brand new SSD hoping I would install W7 on it but I can't even start the setup!! Argh....

I am very experienced with MBR and BIOS but I am a complete newbie to UEFI. I don't know what is going wrong and why the setup hangs....Ther... Read more

A:Asus N76 UEFI - W7 64 Install Hangs on Logo (DVD UEFI Boot)

Win8 PC's have Secure BIOS which must be disabled to install any other oS, then you can install in UEFI mode following these steps: Downgrade Windows 8 to Windows 7

If you want to bypass UEFI and install normally to an MBR drive the procedure is related here: MS new "Secure Boot" locked BIOS arrives

Other info on EFI:
Technical Note: UEFI BIOS vs. Legacy BIOS - YouTube
The 30-year-long Reign of BIOS is Over: Why UEFI W... - Input Output

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What is UEFI Boot Source means and why some people disable this feature?


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Trying to understand handshaking between UEFI & Win 7. Have Win7 Pro sp1 64 installed on SSD, mb=Asus F2A85-V Pro. Example: boot to flashdrive to do Acronis backup of SSD; remove SDD, insert spinner; boot again to flashdrive to do Acronis restore to spinner (to test backup); remove flashdrive, boot to UEFI, set UEFI spinner as default, save & reset; spinner starts boot (#1), Win logo shows briefly, reboots (#2) and shows Win repair/normal screen; choose normal; Windows desktop shows; new driver is loaded for spinner and asks for reboot (that part I understand); reboot (#3) starts and again briefly shows Win logo before yet again rebooting (#4) to the Win repair/normal screen; again choose normal & all is happy. But then I remove the spinner, insert the SSD, and have to go through the whole deal again. Why so many reboots?

Similarly, if I change any hd/flashdrive configuration, my UEFI boot selection is lost & I have to reset it again - sometimes with the multiple reboot scenerio, sometimes not. Sure wish I could force that the UEFI selection stay there as long as the selected drive is installed.

A:UEFI boot keeps changing; UEFI/Win7 handshaking confusion

Hello and welcome diana look I am having a little difficulty in following the train of the thread.

Now do you mean you just backed up the SSD to a USB stick ? then tried to transfer that USB stick back up to the spinner? If it was just a back up then I don't think it is going to work because it is only a backup.

To make the spinner the boot device I would be cloning the SSD to the spinner. I wouldn't mucking around with sticks as I cannot see why that is necessary.

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Hi! I have problems installing windows 10 in UEFI mode. I configured the bios with Legacy Support disabled and Secure Boot enabled and disabled, but at the time of selecting the boot device in the boot manager, no device appear. I tried the same configuration in another hp notebook (HP 245 G4) and it works perfectly. Also, with Legacy Support enabled the boot manager recognized the usb key as USB Hard Drive (UEFI) - KingstonDataTraveler 2.0 and USB Hard Drive - KingstonDataTraveler 2.0, but in my dv4 only recognized USB Hard Drive  - KingstonDataTraveler 2.0. I thought it was bios problem so I tried to restore it, but the pc still does not recognize the usb in UEFI mode. If i select Boot From EFI File in boot manager, file explorer is empty. What is wrong with the bios configuration? Thanks. My PC: HP Pavilion dv4 5162la

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Hello to the forum. Thanks for the welcome. And thanks for pointing me in this subforum.

I have a notebook toshiba satellite L850-1HU with UEFI

Default is win 8 os, recently upgraded to 8.1.

Now I need to win 7.

I have a professional license N sp1 x64 and then supports UEFI

Is possible to combine the systems in dual boot and both in UEFI mode?

I see from your guides that for installation the UEFI is necessary partition in a certain way.
What should I do if I want to leave intact the UEFI partition of win 8 (5 partition)? I just make only space for win7(1 partition) that will use the same 4 partition UEFI of win 8 or i make other 5 partition???
And which of the two systems will handle the boot? I can decide I?

and the warranty? restores factory work?

If I change hdd, and install win 7, when I put the old hdd, it works as before removing it?

Sorry for the confusion! I hope you manage to understand me and help!

Ciao forum! E grazie! Saluti dall'Italia!

A:Satellite L850 & Win 8 UEFi: How dual boot UEFI win 7 ?

If I change hdd, and install win 7, when I put the old hdd, it works as before removing it?

Yes. This is how I do any OS tests\'dual boot'\experiments etc with zero chance of damage to the original boot OS\hd. Am keeping a bunch of old HD's for the purpose. The downside is the slight risk for some mechanic\connection problems, just be careful, remember to power down! So if you don't find it troublesome to switch HD's, IMO go ahead and try that route.

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Hi all,

Currently having a wake on lan issue with a certain computer.

The machine is setup correctly but the windows boot information is stored in a 100mb UEFI partition, and when the computer wakes on lan, it will not boot windows, just sit at a blank screen.

When it wakes on lan it is trying to boot from the legacy device (same blank screen happens if you choose to boot from it from bios)

ive tried updating the bios but no luck, all settings seem to be as they should be.

Is there some trick to get it to load the UEFI MBR, or is there a safe way other then reformatting the machine to move the MBR over to the legacy device itself?

Thanks for any help.

A:Boot UEFI from wake on lan, or convert UEFI MBR to legacy.

Back up your files, unplug all other HD's and peripherals,

Boot into BIOS setup to enable Legacy BIOS. Next check BIOS Boot order for an EFI Boot Disk: remove it, set DVD drive first to boot, HD second. Then set SATA controller to AHCI. Save changes and Exit.

Then boot into installer DVD or flash stick burned or written using tool and latest ISO for your licensed here.

At first installer screen Press Shift + F10 to open a Command Box, type:

SEL DIS 0 (after confirming Windows 7 target HD #)
CREATE PARTITION PRIMARY SIZE=102400 (for 100gb partition, adjust as desired)

Next click Install Now to Clean Install Windows 7 to the partition you created. If it fails then report back at which step and the verbatim error message.

In addition read over these steps to understand the tools and methods which work best to get and maintain a perfect Clean Reinstall - Factory OEM Windows 7. The steps are the same for retail.

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Hi all! I've got a question: my L440 (20AS) will not boot when I connect a monitor over DisplayPort to it - it gets stuck on the ThinkPad boot logo. If I connect the monitor while Windows is running, it works fine.The monitor in question is a Dell P2415Q, it's connected to the DisplayPort on the computer, which sits on a Basic Dock (the dock doesn't have a DP on it).Have tried playing with various boot/power settings in the BIOS, haven't managed to find a combination that works. Has anyone encountered/fixed this? Thanks and kind regards,Marin

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Hi everyone , My laptop type is 20AS-S29900 , 16go ram added , celeron 2950M=> i5 4300M,Once the Guarantee vanished i change my cpu , all was perfectly ok.Two weeks ago, i was using ''AIDA" to have complete informations about my laptop internals. The whole system froze , after a while waiting i forced the shutdown by pressing the power button.From that moment, once i power on the laptop am stuck to the boot screen :  ''Thinkpad      To interrupt normal startup, press Enter ''. It go nowhere, no bios , no OS , nothing , from my research i have to say my usb ports is fully ok, my ram is ok , my cpu is ok . Any idea ?

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I 'm afraid that I've made a mess in the UEFI of my laptop, that can't be fixed. The history is the following:

I had a dual boot setup, Windows 10 and Ubuntu, but I wasn't using the linux for a long time. Now I will need to use it again, so I decided to remove the old one (version 14) and install the most recent version.

I followed the steps in this tutorial: How To Remove Ubuntu From A Computer Dual Booting With Windows 10 (UEFI only) Everyday Linux User

In short:
sudo efibootmgr
sudo efibootmgr -0 1, to make windows the default boot (I guess it is here that the mess starts, beacuse I put only windows in the boot list)
Then I deleted the ubnutu from EFI partition.

So far no problems. I was able to remove Ubuntu from booting, and was able to boot into Windows 10.
But when I tried to boot trough a DVD to install the new Ubuntu version, nothing happened. In the boot order menu in the UEFI there was only one one option, Windows Boot Manager, and no other driver (DVD, HD, USB, etc.). There's also no option to add new drives from the UEFI menus.

Searching in the internet for how to enable to boot from DVD again I haven't found no solution that resolved my problem.
Then comes the big mess. After a couple of hours without no results, I found a post where it was used the following command in Windows prompt:

bcdedit /set {bootmgr} path \EFI\refind\refind_x64.efi

I don't know why, but I just executed the command without further reading.

Now I simply can't boot. It says all bo... Read more

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Building a new win7 box using Asus F2A85-V Pro with UEFI bios. Want to avoid an irritating problem found on my other Win7 box built with same mb using UEFI, GPT, Fast Boot. I boot to a flashdrive for clean system backups. Then I remove the flashdrive and try to boot "normally". The default boot device isn't found & Setup defaults to MBR. I have to reselect the UEFI partition and exit with a reset. Then Windows usually complains & I have to tell it to boot normally, sometimes twice. Not sure what's causing this; is this way UEFI is supposed to work? Or maybe it's Fast Boot or the Asus implementation of UEFI? Hopefully it's just operator error & I don't have something selected correctly in Setup. No problem with rebooting if flashdrive not involved.

A:UEFI reboot problem after boot to flashdrive

Check the UEFI/BIOS firmware, make sure Windows Boot Manager is first boot device.

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Dear Friends,

Long time reader of this forum but a first time poster, so please forgive me if this question has already been asked and answered.

Laptop: ASUS UX31A-DB71, latest BIOS: 218

Originally my laptop came with Windows 7 and when i looked at disk management my disks were formatted with UEFI schema. One of my friend gave me a UEFI bootable USB drive loaded with Windows 8. So, i thought why not give it a try. So, I created a backup of my OEM Windows 7 and saved the iso files in a seperate external HD (created twice just to be sure . Now, i decided to load the Windows 8. Booted into the BIOS and there is an option to select the USB drive along with the UEFI option for that USB drive. I selected the UEFI option but some reason it does not boot into UEFI. So i decided to select the standard USB install and this option let me install windows 8. In the process of installing i formatted the partitions and made a single partition and installed Windows 8 on it. I am guessing now the drive is not GPT but MBR. I also noticed that his installation USB disk had an option to select either 32bit or 64bit of Windows 8...I find this kind of odd. Would Microsoft create a same iso file with both versions? I am guessing he created the USB from a illegitimate source.
I am planning on purchasing Windows 8 Pro version as an iso but wanted to be confident that it would work with UEFI architecture.

1. Why would the system NOT boot from UEFI?
2. If I download the legitimate iso fr... Read more

A:UEFI USB Disk - Does not boot from UEFI Windows 8.

Welcome. Begin with Clean Install - Windows 8. See the UEFI links in the tutorial: How to Install Windows 8 Using "Unified Extensible Firmware Interface" (UEFI). You also will want to see this tutorial link: How to Do a Clean Install with Windows 8 Upgrade.

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Hello everyone
I am trying to make Windows 10 scripted installation with UEFI boot.
Every things works with normal Legacy mode in our environment and k2000.
I have made WINPE 10 boot file as a normal procedure with k2000 Media Manager (like in legacy mode). And uploaded it to k2000. Of cause I have re-cached my drivers when making new a boot source. 
I have setup our new DHCP so it can boot with UEFI and it works!, and I can see my boot sources when boot up the client in UEFI mode. 
Here comes the tricky part I can choose my newly created Windows 10 boot source with Dell's own WINPE10 drivers. Then it loads the Boot source file that I created but It stop at the Windows 10 logo it never loads the deployment menu like in legacy mode, so I cannot deploy a scripted installation.
I am stuck what could be wrong or what have I missed ? Please help


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I am in the process of doing a number of clean installs. I am trying to make a decision as to whether or not to utilize the UEFI and Secure Boot modes which are available on the MBs.

It seems from an initial attempt, that I cannot simply use UEFI/GPT without turning on Secure Boot...that is one must NOT use CSM (turn it off) and USE Secure Boot. You cannot use UEFI without Secure Boot.

Is this correct? I am considering us9ng UEFI without Secure Boot because I hear it is faster.

However, I am concerned that I will run into all sorts of trouble turning Secure Boot on with respect to double booting Win 10...and additionally with creating images with Acronis.

I have been in the habit of creating a new PC with an extra drive with a cloned OS...then disconnecting the drive so that if the first OS drive fails, the person can boot up quickly with the other drive. I am concerned that there will be a problem with Secure Boot.

I mean, how many times have I been infected with a root kit.....some virus that take over at boot time...Answer...never since I started with PCs in 1991!

So, anyone really think Secure Boot is worth it?

A:UEFI/Secure Boot or not to UEFI/SB, that is the question..

Originally Posted by Andrew124C41

I am considering using UEFI without Secure Boot because I hear it is faster.

Secure Boot does not affect the speed of your computer.

Originally Posted by Andrew124C41

However, I am concerned that I will run into all sorts of trouble turning Secure Boot on with respect to double booting Win 10...and additionally with creating images with Acronis.

Windows 8/8.1/10 are compatible with the Secure Boot.

I don't know about Acronis True Image but Macrium Reflect is compatible with the Secure Boot.

Originally Posted by Andrew124C41

So, anyone really think Secure Boot is worth it?

It is a very important security feature.

Microsoft designed Secure Boot to protect the computer from low-level exploits and rootkits and bootloaders. A security process shared between the operating system and Unified Extensible Firmware Interface (UEFI, replacing the BIOS), Secure Boot requires all the applications that are running during the booting process to be pre-signed with valid digital certificates. This way, the system knows all the files being loaded before Windows 8 loads and gets to the login screen have not been tampered with.

If a bootloader has infected your computer and it tries to load during the boot-up sequence, Secure Boot will be able to undo all the changes and thwart the ... Read more

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Hello, I need help troubleshooting the Thinkpad l440 of my roommate. Whenever she turns the notebook on, the screen remains black and a repeating error beep code is audible. 5 beeps then pause and another 5 beeps and pause and so on.Most of the time after some second oder even minutes it continues booting normaly and the OS (Win7 64bit) start up perfectly normal. Since the notbook isn't the newest modell and no waranty left, repairing in by lenovo service wont pay off.I already checked a number of things including CMOS Battery, lose flat-flex connectors, Ram etc.Than i tried to Update the bios via lenovo's utility through the OS .. this did not work with an errormessage telling me the bios could not be read.Now I want to do it via CD. What do you think .. might that help. or is the risk of comlpletely blowing up the machine to high in case the system cannot restart properly after updating the bios? We would be truelly grateful for some information or advices.Thanks in advance.GreetingsDaniel

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I've create 2 partitions, 1st partition is Win7 SysPrep and the 2nd partition is Win8.1 Sysprep
I install Win7 and press Ctrl-Shift-F3 to form SysPrep, same as Win8.1 in 2nd partition.
I made this becuase I've 25 Dell new Win8.1 Computer which are UEFI. So I want to make a master computer which has both Win7 and Win8.1 with SysPrep in it. Then I want to clone it to the other 24 Dell computers.
CASE 1 : 2 different partitions with 2 different Windows :
If I install both Windows like above, when Sysprep Generalize Win7, it works fine. But if I SysPrep Generalize Win8.1, it's fine also, but never can boot again back to Win7. The start boot option is like this :
Windows 7
Windows 8.1
If I choose to boot Windows 8.1, it's fine. If I choose to boot Windows 7, it ever boot to Windows 8.1. It means nomatter I choose to boot which Windows, it all goes to Windows 8.1 ?????
CASE 2 : 1 partition for Win7 + Win81.VHD :
I install Win7 (C and press Ctrl-Shift-F3 to form SysPrep.
I create a Win81.VHD in Drive D: , imagex Win8.1 install.wim in it. Also press Ctrl-Shift-F3 to form SysPrep.
Sysprep Generalize Win7 is OK , SysPrep Generalize Win8.1 is also OK. But after that I can only boot to Windows 7 fine, when choose to boot Win8.1 , it always restart and back to the boot menu ?????
Can anyone help ? Thanks a lot.

A:Dual boot Win7 and Win8.1 SysPrep with UEFI GPT Problem

hello,you uefi setup issue is a little over my head ,lol ,but
when I setup a simple duel boot with 7&8 I too had same issue and I ran the win8 boot repair and it fixed the mbr [I assume]so I was able to then boot to either os, good luck.
run repair
Automatic Repair - Run in Windows 8

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I installed windows 10. Normally, There has no problem. But in today, when I turn on my laptop, it shows some waring like this "boot manager is missing. Please insert recovery image or installation media and hit any key". After I search my problem in google. Some people said "change your boot mode to legacy". So, I changed boot mode to leagacy and windows starting. After that I also repair windows OS from installation disc. But the problem is, everytime when I turn on my laptop, boot mode is  always change automatically to 'UEFI'. So, I need to change it to 'Legacy' again and again. How can I fix this problem without reinstalling windows?

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hello,I am Younus Shah Stl My Lenovo Thinkpad L440 cant boot into windows nor bios. Stuck in windows loading and loop. And after few search this kind of yoga books only enter bios from windows and since this cant boot into windows i cant reinstall windows. Any idea. ThanksPlease Guide.

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Hello guys.. I have such a problem here, I L440 and two disks:1. SanDisk SSD - Windows 10 - the private system2. HDD WD1TB - Windows 7 - business work diskI bought something like this:http://www.ebay.ca/sch/sis.html?_nkw=2nd%20Hard%20Drive%20HDD%20SSD%20Caddy%20Adapter%20For%20Lenovo...after installation in the bios you cant see the disk 2.But on the POST screen you can see:Fixed Disk: SSD SanDiskFixed Disk: WD1TBSuch a problem that I cant boot from the disk number 2 - in the Boot Menu is visible only SDD and LAN boot.Caddy work properly because as running a system with SSD in windows 10  I can see both drives ....How to make so, that you can boot from the disk 2. (Windows 7) ??Thanks for showing interest....

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My computer works very well, but  after one hour, sometimes less then that, I've a disconnection with my net. I need to stop what I'm doing and restart the computer.My others device works perfectly.thanks

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HELLO FRIENDS.I need some help.came to me a Thinkad l440, and to my surprise I found this damaged component on the board. As I do not have another motherboard or other notebook. on the motherboard is identified as PQ4144with this damaged component not turning on, only power light flashes quicklyI need to find out what this component is.

P_20171220_155634_vHDR_Auto.jpg ?3151 KB

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Hi,I have replaced CD-ROM by HDD Caddy with SSD (Samsung 850 EVO 250GB) in my Lenovo ThinkPad L440 (20ASS3GT0) as a second storage device (not one with the OS). When I'm trying to start the system, I'm getting a message "Configuration changes - restart the system." and the system reboots again and again. What is more, I can't access the BIOS any more - pressing F1 does not work. Updating to the newest version of BIOS (1.85) does not help. After removing HDD Caddy everything works fine. I have tried some of the configurations below: Removed the battery, pressed the power button for 10-15 sec. and rebooted with AC Adapter connected - still got message "Configuration changes - restart the system."Removed HDD from standard SATA port and connected it using HDD Caddy - cannot boot into the system. There is no message "Configuration changes...", HDD is detected but it is not on the list with bootable devices (there is only one option to boot over the LAN).HDD Caddy connected with no storage device - boot into the system with no problem.The problem is, that I need two storage devices - one for the OS and second one (using HDD caddy) for another data. Could anyone help me to solve that issue?

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I am facing error 651 problem in windows 7 in my lenovo L440. I tried this method to fix error 651 in windows 7. It's works for me for sometime. But now again i am facing same error.. Anyone can fix my problem ? Thanks in advance.
Mod:  edited Subject line to add system type and clarify problem description

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A year later, and I discover again that I STILL cannot boot from a non-UEFI CD on my UEFI Win 7 Pro SP1 64-bit Dell Optiplex 7010 MT even though "Enable Legacy ROMs" is ENABLED in the BIOS and Secure Boot is OFF.

My original details are here - Cannot boot from CD-DVD in LEGACY mode - NOT Secure Boot NOT UEFI - General Hardware - Desktop - Dell Community

That thread from a year ago describes the issue but then goes off on a tangent into my (successful) experience in establishing dual-booting, but THIS ISSUE remains. My Dell Optiplex 7010 MT (which is now dual-booting Win 7 Pro SP1 64-bit and Win 10 Pro 64-bit) will NOT BOOT a legacy CD that is not UEFI even though "Enable Legacy ROMs" is CHECKED in the BIOS and Secure Boot is OFF. (My BIOS is A20.)

What is the fix??

Please reply here, not in my old Dell thread above. Thanks.

A:STILL cannot boot a non-UEFI CD on my UEFI Win 7 64-bit - any fix ??

Update - I have now made TWO bootable CDs of Macrium Reflect. These two CDs show the problem.

First, in my old Dell Optiplex 755 Win XP Pro SP3 32-bit machine, I installed Macrium Reflect Free and made a bootable CD with the included Win PE. I assume it will boot in my XP machine. However, that CD will NOT boot in my other PC, which is my Dell Optiplex 7010 MT that dual-boots Win 7 Pro SP1 64-bit and Win 10 Pro 64-bit, even though the BIOS in this Dell Optiplex 7010 MT ENABLES Legacy ROMs.

Second, in that other PC (my Dell Optiplex 7010 MT that dual-boots Win 7 Pro SP1 64-bit and Win 10 Pro 64-bit), I again installed Macrium Reflect Free (with 64-bit architecture) and made a new bootable CD (with the lowest level of Win PE, which is 3.1), and that CD WILL boot in that second machine.

Why are we being tortured this way? I have other bootable CDs from my XP days - is there any way to get them to boot in the second (Win 7 Pro 64-bit) PC?


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I am having problems with direct booting into Windows 8 installed into a VHDX file.
This is a four-partition UEFI boot on a GPT drive. EFI files are residing on a second partition of disk 0 (the ESP partition) in the EFI folder. The boot virtual disk is residing on the fourth partition of that disk 0.
When I turn on the PC, it shows black screen after the BIOS POST screen. No Windows 8 boot menu, no other information is displayed. However, if I press Shift+F12 (or F12) to start Dell BIOS Boot Menu and choose Windows Boot Manager from the UEFI part of
the boot menu, Windows 8 starts to boot without difficulties.
How do I make Windows to boot automatically without having to select Windows Boot Manager in DELL BIOS boot menu?
I believe I messed up with boot sector somehow... What needs to be fixed provided that Windows 8 will boot into VHDX file?
Thank you.

Well this is the world we live in And these are the hands we're given...

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I have a Optiplex 990 SFF. Recently updated BIOS to A15 and I wanted to install Windows 8.1 x64 with the UEFI BIOS (Supposedly it boots very fast like that). 
Anyhow, I partitioned all drives as GPT, yada yada and it was all set up and running Windows 8.1 on UEFI with all drivers installed.

The thing I noticed was that Booting Windows 7 on legacy BIOS was so much faster. I have an SSD too but I am not sure why it is doing this. If I am not mistaken, UEFI boot means it will boot with the Dell logo showing and the spinning circle right? It doesn't show that, it shows a dell progress bar then boots into windows with the windows spinning circles. 

A:Optiplex 990 UEFI Boot "problem"

The 990 doesn't have UEFI Secure Boot.
It has Class 1 CSM Bios.
This is not and will never be a feature of the 990.
GPT partitions are standard now.
MBR Partitions / FAT32 are not allowed in windows 7 and up.
They Must be NTFS and they have a MSR.  You don't see the first 2 parts in disk management.

Your hard drive partition style must be set up to support either UEFI mode or legacy BIOS-compatibility mode.  Since there is no UEFI in a 990 they are Legacy GPT partitions without secure boot.

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Hi all!
I have Alienware Aurora R4 machine with three hard drives:

(Local Disk)C: - (Windows 7) the “original” one that I bought with the computer.
(OS)D: - (Windows 10 with all updates) the one I’ve added after the “original” started to show signs of degradation.
(STORE)F: - (no OS) the one I use just to store stuff.
I’ve had dual boot and everything was hunky-dory until last week the C drive have finally kicked the bucket.
First the computer refused to shut down until I forced it. And next morning it took more than TWO hours to boot. When I finally got to the window explorer the C drive was still there but I couldn’t access or do anything to it.
In the old times I could just remove it and set boot priorities in BIOS to boot from drive D. But if I actually remove the dead drive now, the computer says that it has nothing to boot from. 
It appears that with UEFI mode enabled

I don’t see the actual drives in the BIOS (It only shows general source types, like Hard Drive, CD/DVD, etc.) and therefore cannot boot from a particular internal drive.
I cannot assign Active Partition
I cannot remove the dead C drive

So, what am I supposed to do? Please, HELP!

A:Aurora-R4, How to assign a particular boot drive with UEFI boot mode enabled?

Hi willkanoff,Thanks for posting.You may find more answers to your question by posting in the Alienware Forum.  http://dell.to/2yJl3j1

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After creating a UEFI bootable USB thumb drive with Rufus (using Windows 8.1 Enterprise ISO x64), for a Dell Optiplex 3010 (configured as UEFI only, no CSM, latest firmware version, Windows 8 installed), I didn't see a USB boot option, so I tried to add one manually. Unfortunately I erased the existing boot option (boot manager) by mistake. Although there were two boot options for PXE booting, the machine will not start anymore, even when there is an active WDS server on the network.

I also see Led's 2 and 3 lighting up, meaning according to the manual 'hardware ok but bios possibly damaged/corrupt'.

I understand I cannot start the machine from a bios boot disk because of GPT partitioning, and the UEFI USB boot disk I made might be corrupt (as it didn't show up as a boot option), however I don't understand why it won't boot from the PXE network card, as these boot options are still there.

Any suggestions on how to solve this?

Thanks for any useful tips,

A:Deleted Uefi boot option (Windows Boot Manager) by mistake

The Windows Boot Manager is held in the Bios and restores itself if you boot to a UEFI capable device. Could you please explain exactly what you did to "Add" the USB boot option?

I haven't used Rufus since it is so easy to just format the drive yourself, but it did format in Fat32?

I have the PXE boot options disabled in my bios since I do not have a network boot option.

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Just curious, but is there option for me to enable uefi boot of my Windows 10 Professional installation on my HP xw6600 dual quad core E5450 machine which holds two Samsung 850 Pro SSD's, one for Windows 10 and the other completely for Ubuntu LTS 16.04.When possible,  how to go about it. How do I enable this option. Yours truly, 

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Is there currently any way to configure a custom boot logo for UEFI booting? I can only find methods for Legacy users, but no luck with UEFI.

I'm kind of new to custom boot logos, so if anybody could give me some information as to if it's possible first?


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yesterday I wanted to install Windows 10 Enterprise on my T1650 test machine. Before doing so, I successfully updated the BIOS to A20. After updating BIOS, I've enabled UEFI + Secure Mode, saved the changes and... couldn't start the PC anymore. When turning the PC on, monitor immediately goes into power saving mode, there is obviously no signal coming from the PC. Removed the Nvidia Quadro NVS 300 and plugged the monitor into board's VGA slot, no success. Tried to clear the CMOS (battery out, jumpers), nothing helped.
Any ideas?

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Hello, first post here...

First, some context: I have a Dell Inspiron 15R SE that came with Windows 8.

I've managed to get a working dual-boot system with Ubuntu 12.10. I can't remember exactly how I done that, but I remember that I had to disable secure boot. I think that the boot configuration those days was:
Secure boot: DisabledLoad legacy option rom: EnabledBoot list option: Legacy

This "configuration" worked perfectly for 6-7 months.

Then, one day (last week, can't remember the exact day), when I was using Windows 8 the computer crashed. I hard-rebooted and got this screen:

I've searched a lot, looking for solutions and after executed boot-repair from a Ubuntu LiveCD dozens of times I've decided to eliminate Ubuntu temporarily and focus to get a system with Windows 8 working nice.

Then I used my recovery DVDs to recover the system. Yup, Windows has booted. But when I restarted first time I got the same error. Then I, digging a solution, pressed F12 after a reboot and got here:

The highlighted option allows me to boot into Windows 8. So I went to boot options (F2) and changed the following configuration:
Load legacy option rom: DisabledBoot list option: UEFI

Now I can boot directly to Windows without need to press F12.

But my objective isn't complete. I want to erase all Ubuntu entries from the seconds image and restore the legacy boot from the first imagem (because they worked before).

I did two things:
I erased all partitions related to Ub... Read more

A:Recover legacy boot and remove old entries from UEFI boot

Are you booting the Start up Repair CD/DVD/USB in UEFI mode.

Try one of those.

From the desktop:
System Recovery Options - Boot to in Windows 8
From the Repair CD/USB:
How to do a Auto Repair:
Automatic Repair - Run in Windows 8
Note: You may need to do startup repair 3 to 4 times.
Startup Repair - Run 3 Separate Times - Windows 7 Help Forums

How do a Refresh:
Refresh Windows 8

How to do a Reset:
Reset Windows 8

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I have a new Precision 7710 with a 2.5 inch 1GB SATA SSD (system boot=Disk0) and a 1GB NVMe PM951 SSD.
I have been attempting to install Windows Server 2012R2 on the second, M.2 SSD (Disk1) into a GPT, NTFS partition.
Since this system has no DVD, I made a bootable UEFI thumb drive with the contents of the .iso installation for Server 2012R2.
The thumb drive boots OK and I can begin installation, but when it comes to choosing the target for installation, the M.2 SSD is not visible in setup.
The M.2 drive is clearly visible inside Windows 10 Pro as the D: drive.
So...I mounted the .iso setup file in Windows 10 and ran setup.exe. The install began and could see the target M.2 drive, and began loading files on the second SSD. It then attempted the first of several restarts that come with this process with the new Server 2012 R2 environment.
It sucessfully modified the Windows Boot Manager before the restart, then restarted, and the setup program gave an error because it could not find the target partition on the second SSD.
The setup environment then modified the Boot Manager to "Windows Setup Rollback" and proceeded to enter an infinite loop, attempting to delete files from the unreachable M.2 drive. I manually choose Windows 10 on the boot menu, and once booted changed Windows 10 back to the default OS.
I've tried several things (turning off Secure boot, changing from UEFI to legacy bios--it won't boot at all that way) , but I can't get that second disk t... Read more

A:Precision 7710 UEFI Bios and pre-boot does not detect second SSD (NVMe PM951) can't install Windows on it for dual boot

You're going to need to build a new set of boot media with NVMe drivers.

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HP Notebook 15-f009wm
OS: Windows 8.1 with Bing 32 bit

Hello all,

This is my problem:

I can't get my USB drive to load while in Secure Boot mode and continue running into 'Boot Device Not Found. Please install an operating system on your hard disk' screen. The only method that works thus far is disabling Secure Boot mode and enabling Legacy
Support. Here are the methods I have tried based on extensive research of various forums after several days:

- Performed all the generic System Diagnostic tests (F2) + Memtest86 + sfc /scannow multiple times after every fresh install + physically checked HDD. Performed all HP recommendations: http://support.hp(DOT)com/us-en/document/c01443463

- Did multiple fresh installs of Windows 8.1 with Bing (32 bit) erasing all partitions from hard drive every time (my system is designed for 64 but I only have access to a 32 ISO). Installed using Legacy Support (I understand you can't go back and enable Secure
Boot and disable Legacy once it has been installed this way but due to lack of any other way of installing Windows, I have no choice).

- Used 'Windows 7 USB/DVD Download Tool' to create ISO which automatically formats drive to NTFS; converted to FAT32 using 'AOEMI Partition Assistant' software (preserving all partitions/data) but it still won't read.

- Used 'Rufus v. 2.11.995' software to create ISO as FAT32 under several different setting iterations:

1. GPT partition scheme for UEFI (this presumably s... Read more

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Hello all, This is my problem: My BIOS won't boot my USB drive while in Secure Boot mode (Legacy Support disabled). After researching this, I realized UEFI Secure Boot won't read NTFS formatted flash drives hence requiring user to reformat to FAT32. I've reformatted to FAT32 but it still won't boot. I continue to run into the 'Boot Device Not Found. Please install an operating system on your hard disk.' screen. The only way to get the USB drive to boot is to disable Secure Boot and enable Legacy Support. Virtually every forum I have researched pointed to this being the problem (aside from loose hard drives / hard drive and/or memory problems). I have checked the hard drive and have ran the F2 System Diagnostics and am sure there is no problem with the HDD. I have even tested the RAM/CPU with Memtest86 with 0 errors. I have ran multiple 'sfc /scannow' tests after each fresh Windows install and there are no corrupt files during installation. I have been trying to install a fresh Windows 8.1 with Bing (32 bit) on a system that originally came with 64 (there were no 64 bit ISOs available anywhere to download and since Microsoft conveniently doesn't make this specific Windows version available for download via their Media Creation Tool (or anywhere else on their or their affiliate sites for that matter), I was forced to resort to a 3rd party site to obtain this download. The problem is I am forced to install using Legacy Support as there appears to be no o... Read more

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Belarc reports UEFI: American Megatrends Inc. P11-B2
Operating System: Windows 10 Home (x64) Version 1511 (build 10586.494)
Installed: 4/27/2016 5:58:22 AM Servicing Branch: Current Branch (CB)
Boot Mode: UEFI with successful Secure Boot.

This is my brother?s computer: originally it was Win8, upgraded to Win8.1 and then in Apr to Win10.
--- The computer runs OK and I?ve shown him how to use MRF to create system image backups.
--- Today Aug 8 we tried to test recovering yesterday?s Aug 7 system image backup.
--- It didn?t go well at all.
--- The MR recovery DVD-RW didn?t boot up in order to test it.

I thought of disabling Secure Boot to see if that was blocking the MR bootable Rescue DVD-RW.

However we weren?t able to boot into either the UEFI BIOS or Boot Menu.
--- According to our notes DEL is used to boot into the UEFI BIOS and F12 is for the Boot Menu.
--- However when booting up: in less than a split second something scrolls up but the computer immediately boots into Windows to log in.
--- That?s much too fast to get into the UEFI BIOS or Boot Menu.
--- Please help us figure out what to do.

Following that I?ll have to learn how to ensure proper system image backups and recovery using MRF.
--- I don?t recall any issues when I had Win7 but re-training myself makes sense to me because it?s obvious I don?t understand it well.
--- For now I?m going to completely uninstall MRF from his computer and hope to start over with a clean slate.

A:Cannot boot into UEFI BIOS or Boot Menu

Try F2 or F8 while Powering ON.. (which you might already Have). If no go update BIOS(which you might already have).

Assuming you have Windows 10 or Windows 8.1 on computer.. Do a Shift + Restart >> Troubleshoot >> Advanced Options >> Change UEFI firmware settings...Restart.
U should be be able to boot in BIOS.

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Just bought a Dell Optiplex 7010 Mini-Tower with Win 8 Pro 64-bit, 8 GB RAM, 500 GB hard drive and an Intel i5 3470 processor. Right now, it has Dell BIOS version A16.

It is normally in UEFI ON and Secure Boot ON, so that F12 on bootup (one-time boot options) does NOT normally show the CD-DVD as a boot option. OK - no problem.

However, if I reboot with F12 and select both UEFI OFF (meaning Legacy ON) and Secure Boot OFF and reboot, then F12 DOES show me the CD-DVD as a boot option, but if I actually try to boot up from a bootable CD, I get an error message.

I have practiced with two bootable CDs - a Knoppix and an Aomei Backupper, both made on earlier machines. Both these CDs work as boot-up CDs in my old XP machine, and the Aomei Backupper CD also worked in someone else's Win 7 Pro 64-bit machine.

What's wrong?

Again, please let me repeat that I am trying to boot from the CD-DVD AFTER I have turned OFF UEFI, turned ON Legacy and turned OFF Secure Boot.


A:No Legacy boot from CD-DVD - UEFI and Secure Boot are OFF


But if you're using those settings, Windows 8 will not start.

Here is more info: Legacy BIOS Boot Mode (installing using the MBR partition style) and UEFI Boot Mode (installing using the GPT partition style): link

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how to transfer the boot of windows from legacy support to uefi? 

A:trnsfer from legacy boot to uefi boot

Hi, It may depend on how the existing installation was performed - let me know the following. Hold down the Windows key and press R Into the Run window, type devmgmt.msc and hit enter. In Device Manager, expand Disk drives, right click the ssd and select Properties - select the Volumes tab and then click the 'Populate' button. What is listed as the Partition style? Regards, DP-K

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I have an Inspiron 5759 laptop with Win 10 home.  I want to add a boot option for a CD/DVD.  I can access the UEFI but can't figure out how to add this option to the UEFI boot sequence.

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Hi there,

i cannot seem to enter in the UEFI bios of my PC. I am using a mechanical keyboard and tried with a regular DELL keyboard.
The BIOS screen goes so fast that both the keyboard do not load on time to press DEL or F2.
I don't see the settings to boot to UEFI in Windows 8.1 anymore...

Is there any other way to get in the UEFI BIOS.

Thanks in advance


A:Cannot boot into UEFI

UEFI Firmware Settings - Boot to from inside Windows 8

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I have ordered a new MB + CPU + RAM + SSD on which I want to install Win 8. I then will retire my 6 years old C2D with Win 7.

My old ASUS board had an old style BIOS. I understand new boards have a newer type BIOS called UEFI.

I have read posts where people talked about Booting to UEFI first. To be honest, I did not understand what they were talking about.

Could help me get a rough understanding of what UEFI does? What UEFI settings should I use to install Win 8?

The board I am getting is a Gigabyte B75M-D3H.

A:What does Boot to UEFI mean?

Here is a nice Tutorial:UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with

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