I need to change the multiplier in the voltage/frequency option in bios. But I can only change FSB, I dont know how to change multiplier. My board is MSI PT8 Neo LSR (Intel)Socket 478, (I really dont think it is necessary to mention all this). Reason I need to do this is that my Pc is heating up, I have to lower it.
I recommend downloading and running Reimage. It's a computer repair tool that has been proven to identify and fix many Windows problems with a high level of success.
I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.
You can download it direct from this link http://downloadreimage.com/download.php. (This link will automatically start a download of Reimage that you can save to your computer.)
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I installed a new motherboard and processor. ASUS A7V8X-X
AND DURON 1600MHZ. RUNNING WIN98SE. Froze on splash
screen. Bios reported CPU multiplier high 10.5 lowered to 7.5.
Tried Duron no help. What is the correct multiplier and CPU external Frequency. All help appreciated I am lost.
CPU Multiplier should be 12x
12x * 133mhz = 1600mhz
Your motherboard sounds like it needs a bios update, also remember that a duron 1600 is nothing more than a Tbred B with some of the cache disabled, if your mobo doesn't like Tbred it won't like the new "Durons" either
PS Have you tried booting the board at 100mhz FSB?
I have Corsair XMS2 DDR2-800 memory - I overvolted from 1.8 to 1.9 volts thinking that it would make it more stable when I overclock them to 1066. Wrong. When I saved the change, my computer shut off, and when I turn it on, it gets no display or no POST. Can .1 volts really fry something?
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when i boot the pc and hit delete(to enter setup) and bios blue screen comes up i see this on menu:frequency and voltage control.
when i get in to it there are a few adjustable settings like:
cpu frequency(mhz): (min 100 max 355)
agp/pci clock ratito: (10/20 or 20/40 or 35/70,40/80 etc)
then there is
ram clock ratio: (i didnt try to configure it so its 532)
and another agp/pci clock ratio as the same above..
i dont know what they effect but i certainly want to bring them to the optimized values.
i have xp pro sp.2
2gb ram 400 mhz(they run at 266 mhz,my mo-bo can support max 2 g)
nvidia 7600 gs agp 4x/8x it runs at 4x agp because my pc is old and is an agp.
intel pentium titan 4 2.4 ghz
motherboard is from gigabyte..
here is a report from everest,you can see everything:
--------[ EVEREST Ultimate Edition ]------------------------------------------------------------------------------------
Version EVEREST v4.50.1330
Benchmark Module 220.127.116.11
Report Type Quick Report [ TRIAL VERSION ]
Operating System Microsoft Window... Read more
I was at Goodwill yesterday and I found an ECS K7SEM v1.0 motherboard for $6. Assuming that it works, I wouldn't mind getting an AMD cpu and some RAM to get this going as a multi-purpose additional computer for my apartment.
The original intent of this board was for AMD processor running at either 100Mhz or 133Mhz FSB. The manual for the motherboard says that the RAM speed cannot be less than the processor FSB. For example: according to the manual, if the CPU has a FSB of 133Mhz, then PC133 RAM must be used and PC100 RAM cannot be used. If a CPU has a FSB of 100Mhz, then either PC100 or PC133 RAM can be used, but not PC66.
This manual was printed in 2001. However, in 2002/2003, a new BIOS upgrade was created for this board to allow support for Athalon XP 2100 and 2200 processors.
I was looking at an AMD XP processor at newegg and realized that the FSB is 266Mhz, according to the specs. I always get confused about FSB ratings. Are you supposed to divide this number by 2 with AMD chips? Like if the FSB is 266Mhz, should I use PC133 RAM to be compliant with the statement in the manual about using RAM that matches or exceeds the CPU FSB?
Another question I had is related to the new BIOS update that supports the newer processors. Would I need to use an old processor in order to update the BIOS before I can use the XP processor? Or will I be able to update to the XP supporting BIOS with the XP processor already in the socket?
If everything goes smooth... Read more
When an AthlonXP is advertised with a 266mhz FSB, it is actually running at 133mhz but its DDR nature makes it run as fast as a 266mhz FSB. Any 266mhz AthlonXP should work on that board provided it isn't above the 2200+ ( 1800mhz ).
I have an ECS P6BX-A+ motherboard, with award BIOS. I have flashed the BIOS recently and is at the newest version possible. I want to overclock my PII400 more. It is currently at 448 MHz. In BIOS i can change the frequency from 100,102,...,112. it is at 112 right now (112 x 4.0) I want to change the multiplier to 4.5, or anything for that matter. When i change it nothing happens. It always remains at 4.0. Any idea as to what the problem might be?
The multiplier is locked at 4.0, you can't change it. This is by design.
just built a new PC and everything seems to be running fine until I ran CPU-Z. The muliplier keeps reading x8.0 but then changes to x6.0 by itself. ANy readon for this? I will include a screenshot. I lose quite a bit of Mhz as you can see any fix? I have a Gigabyte EP45-DS3 if that helps?
Also im trying to update my score in vista since my graphics is 1.0 as hadn' t installed graphics drivers. Have done this now but everytime i refresh score it says new hardware detected. Has this got anything to do with my CPU problem or could it be im downloading updates at the time? Thanks for help
In pic one, you're basically doing nothing. In pic 2, you're doing a little of something. The CPU speed has been decreased for the time of semi-idling by a feature called... something I don't quite remember at this second. Speedstep or something like that.
Vista score has nothing to do with actual performance so screw it. Just get the latest drivers from Ati or nVidia (you have your old specs in the box) and you're good to go.
My new Core 2 E6320's multiplier keeps changing between 6 and 7. I want it at 7 so that it runs at 2.8GHz. Speedstep is off in the BIOS... so I don't know what's wrong. Anyone know?
System Specs are in signature and profile.
Did you overclock the computer or something?
I know if I had put some bad settings, my multiplier goes beserk. But once good settings are in, it stays put.
I've been looking through my bios but, haven't seen any way to change it I'm running at 3.8GHZ and if I can change the multiplier from 38 to 40, I assume, I can hit 4.0ghz. correct me if I'm wrong. I'm running the i5 4670k processor is it even possible? Thanks!
I'd imagine you have to change the Ai Overclock Tuner, or whatever they are calling it now, to "Manual" and then change the core multipliers. If you can, go into your BIOS, access the advanced mode and take a few screenshots of your options. You'll need a flash drive plugged in to take screenshots.........I believe its the F12 key. Post some pictures up and we'll try to get you goin.Read other 1 answers
I was working on Over clocking my Amd Athlon 64 3200+ Venice and i was in the Bios and i know i cant step up to multiplier but i can step it down (below 10x, the original max multiplier) but, it seems that whenever i turn it from automatic to manual control and reconfigure the multiplier it wont save the changes and just automaticly revert back to the max multiplier. I just wanted to know if anyone knew what the problem is?
Windows XP Home SP2
AMD Athlon 64 3200+ Venice
Bios Info (taken from Sisoft Sandra):
Maunfact.: American Megatrends Inc.
SMBios/DMI version: 2.30
Thanks alot in advance.
Multipliers are "locked", they can only be lowered from the max stock multi on a64 cpus. A "FX" series chip however, can have a multiplier increased above standard. To oc an a64, use the htt speed(stock of 200mhz, sometimes referred to as a "fsb".)
(^cpu-z on the above pic shows, the multi value, htt speed, and final cpu speed)
This is my first post but I have used this site to solve many of my problems before.
I have a RAM query, and even though I keep searching for info I get very lost in the details so I was hoping someone here could help me out.
I recently added 2 x 512mb RAM sticks to my motherboard, hoping to increase performance. There were already 2 x 512mb sticks installed. When only 2 are installed PCU-Z tells me the RAM runs at 200MHz, but when I add the other 2 they only run at 159.6MHz. I have checked the BIOS setup and it tells me the RAM is running at 333MHz.
So can I increase this to 400MHz? It does not allow me to change it in the BIOS setup. I have tried searching for the answer in the motherboard manual but havent had any luck - it just says that I can check the frequency, doesn't say anything about changing it. The BIOS setup also does not tell me the FSB (which PCU-Z tells me is 5:4).
According to Triple6 with reference to another user "4 DIMMS is your problem. Depending on the Stepping of your CPU it can restrict 4 sticks to running at 333Mhz instead of 400Mhz". Is this the case for my CPU? If so, could I buy 2 1Gb DDR 400 sticks and take out all the 512 sticks to allow the RAM to run at 400MHz? And if so again, would this increase performance other than marginally?
Any info is appreciated.
Thanks very much
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I am planning on getting a XPS 8700 that I am going to take with me to Korea in a few months. The problem is, the PSU seems to not have a voltage switch on it. Is it a internal switch that is activated automatically or do I have to use a transformer? If I do have to use a transformer, what would be the best?
Most modern supplies without a switch are designed to work from around 100 to 240 volts with no switching required to allow it to cover the various power connections in different countries.
The XPS 870 is designed to work form 100 - 240 Volts and with 50 or 60Hz.
You may need to get either a power cable or plug adapter for the Korean system.
I am not familiar with their outlets.
I have a Compaq PC which has a Abit blg30 motherboard with a Pentium 4 (1.6). I would like to replace the CPU with a Pentium 4 2.4 (1.5V). Does anyone know how I can change the CPU voltage on the motherboard? Thank you in anticipation
I have a a GeFORCE6100SM-M HT2000 motherboard, an AMD Sempron 3400+ processor, and two sticks of 1 GB DDR2 800 MHz ram. When I go into BIOS, it says that my "CPU Frequency" is 200 MHz. I was wondering if this is the same thing as my processor's clock speed. It allows me to increase this number, but only in very small increments between 200 and 300 MHz. Obviously, these numbers are far too low for my processor, so I was wondering if there is something that I need to do on my motherboard like putting those little plastic caps on the pins or perhaps changing a different option in BIOS. I did not see anything in my manual about the little plastic caps though. Thanks.
That should be your BUS speed, not your clock speed.
Download CPU-Z and check your Bus Speed and your multiplier.
200MHz should be nowhere near your clock speed, and the only reason you should even change that number in BIOS would be in an attempt of overclock your CPU. I'm sure you do need jumpers etc. for doing that.
You can also check your clock speed by right clicking "My Computer" then clicking "Properties".
My PC has been crashing for some time now and I have been chalking it up to Vista, until today it beeped at me and gave me a black screen saying I had to reset my memory frequency in bios. I compared it to what my RAM says, and the volts are correct, but my RAM says 7 - 7 - 7 @ 1.9v, when I checked the frequency, my bios is set at 8 - 8 - 8 - 28. I could change the 8s to 7s but I have no idea what to change the tRAS to(currently set at 28). Also, should command per clock still be set to 2T? I am using 2 sticks of 2 gig RAM if that makes a difference.
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i have recently upgrade my processor from a intel pentium d 950 to a intel core 2 duo e8400.
i have a ASUS P5N-E SLI motherboard which the E8400 is compatible with and seems to restrict the frequency of the processor from 3.0ghz which it should be running to 2.0ghz, has anyone got any advice on this matter?
You might need a BIOS update. Have you checked with Asus?
i had 4gb or ram but then i added another 4 to make 8gb or ram, but i am getting bsod. how do i change the voltage to match the ram?
Are the RAM sticks the same make and model? Are they the same voltage. Mismatched RAM sticks will always cause BSOD's. It's very important to get matching memory.Read other 5 answers
Well, the title sums it up really...
I OC'ed my AMD Phenom II X3 720 BE to it's 16x multiplier, at a comfy 3.2 GHz, just to test things and familiarize myself with it's voltages. After I set the thing to 16x and rebooted, I checked windows to see if it actually showed 3200 MHz, but it didn't. I then ran CPU-Z and Core Temp, both of which showed exactly 3200 MHz and a 16x multiplier.
My question: Is this just a bug in windows and is my CPU actually 3,2 GHz, or is there something else going on?
The fact that CPU-Z shows higher, changing, voltages (BIOS Core Voltage is set to 'Auto') means to me that windows is doing it wrong. But I might be completely mistaking.
Also, on a sidenote, I wondered if the popular 'Can You Run It' webservice shows realtime CPU clock speed, or just the stock value. Because it's showing the stock value for me, but I thought it might just be getting that from where windows is getting it (the wrong location I hope that is).
Any assistance on the matter would be greatly appreciated.
CPU-Z is more accurate then windows with these things, i would say if both it and the bios says you have then windows isn't reading it properly
Got a bit of a RAM issue, first the problem:
I bought an Acer M3201 from PC world, and have been chucking bits & peices in it recently, however when I came to upgrade the ram, I added 2gb (2x1GB) OCZ - PC2 6400 - the correct stuff, but after doin this my PC refused to boot, turn it on, all the LED's come on but no BIOS beeps, and no display. Had a chat with a few folks and it was decided that possibly the voltage is not sufficient for the RAM, so I had a look at the bios to change it and lo and behold it locked, so i cant get at the voltage settings. Any way i can get to those voltage settings, oh and warrentee is not an issue, :
PC Specs: (CPU-Z)
Chipset: AMD 780G Rev: 00
S'Bridge: ATI SB700
LPCIO: ITE IT8718
Brand: American Megatrends Inc.
If there is any other info u need to help me let me know
Are you saying you canīt get into the bios because its now password protected?("locked")
Hi, I can't find the settings for the CPU voltage in my BIOS. I know it's a H board, but can I lower my CPU voltage? If so how?
The H77 chipset does not allow you to alter CPU voltages. That can only be done on a Z77 motherboard/chipset.
Ive had random freezes in windows 7 for a while now and have tried every possible fix Ive found on the internet. The freezes happened after I upgraded my cpu, gpu and ram. There is a suggestion to change the ram voltages and cpu voltages, I have changed the ram voltages in the bios but for changing the QPI/VTT Voltage I am not able to find an option. The available options are attached in a photo of the bios: View image: 10638025 10152247684780308 1463585580 n .
PLEASE help me fix this problem its really annoying having random freezes, the audio stutters and a hard boot is required. I have run memtest for 10 hours + with no errors and have swapped the ram for the old and new with freezes following.
CPU: intel i5
gpu: NVIDIA 750ti
PLEASE reply with any information you need to help fix the problem, thanks!
Tim mate have you checked out the PSU yet and temps as well see this for checking the PSU
Using HW Info PSU
Download HW Info and pick the right bit version - HWiNFO, HWiNFO32/64 -Download -(copy and paste thissite into the search bar) If you do not need the running information in thesmaller right hand panel close it. In the left hand window click on the + forthe individual device groupings and they will open out to the variouscomponents.
Go on opening out further until you get to the device itself. click on it andit will highlight. In the right hand window there will be a very detaileddescription of that device as in brand, speeds model number etc etc These arevery detailed and are just what is needed for searching for drivers etc.
See my pic for an example - in this I have shown my power but it is a laptopand a desktop will show more details if you scroll down that listing. You will come to a section which lists the rails and for a reference for them see this Power Supply 101: A Reference Of Specifications - Power Supplies Page 2 also gives a good idea of how the Power_Good signak works at pin 8 (grey cable 24 pin socket)
Another way to check the volts is this PSU - Test DC Output Voltage but please do not use an analogue meter as it injects volts - typically 9v into a circuit to test it and doing that to a 5v rail doesn't take a rocket scientist to work out what would happen because all the rails have to be within +/- 5% of the stated value.
Run Speccy for the... Read more
Tried to find a similar issue in the forums first. Forgive me if I this is a repeat afterall.
I got an Optiplex 9010 I7-3770 SFF (VPro) used desktop recently to put into my cloud in the lab. Normally I simply check the cover again (AMT #1) and move on with the MBEx selection after F12 during boot. This one is not working as expected. Here is the sequence of events:
1. Power on the computer and F12 to get the boot options/list.
2. I can see the Intel Management Engine BIOS Extensions option there. I select and press ENTER.
3. Screen disappears, but comes back now "without" the Intel Management Engine BIOS Extensions option! At the top is states that "Note, some options have been removed as they are no longer valid.".
I have not seen this before. IF it is disabled, why show it...
But in any case, the question I have is, how can I get this option to work so I can provision this box using Intel AMT/MBEx settings. The machine is enabled for MBEx (AMT #1 on the inside chasis cover).
The BIOS revision for this box is A14. I may need to update it as well. Though I am going to wait for any responses before doing so.
Thank you all.
So i updated my bios using @bios and i restarted the computer like it instructed me to and it started this restart loop where it would bsod before windows could finish loading and i am unable to use my pc.
This issue has happened before and its because the bios update gets rid of all settings and sets eveyrthing to auto, but the guy at IbuyPower told me it has to be set at a custom voltage and timing but i am unable to restore the backup i made of the settings as they are reported as not existing anymore.
I tried calling them but the tech on the phone actually argued with me about it apparently sounds like more of a os issue but i know for a fact its a bios issue so here i am.
I have a Gigabyte p67a motherboard and 4 sticks 2gb each of supertalent ram at 1600mhz but i believe its a mislabel because my pc told me before the update that it is 1333 mhz.
the ram serial number is w1600ub2vg and it is a pc-12800 series and i set it to 1.5 volts but it still wont work.
i also have an Intel core i5 2500k going at 3.30ghz
So how do i fix this issue?
Bios does report after a few failed attempts that my issue is an overclocking/voltage issue but i dont overclock!!!
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Hi. After upgrading BIOS to 2.12 the CPU frequency is locked to the lowest possible (disregarding BIOS settings). Plugging in the battery makes it work again.For the sake of prolonging my battery life I ususally run without it when safely docked at home.Anyone else experiencing this? I assume it's a bug?
It sounds like a bug might have been fixed. I would expect it to slow down if you had just a battery (no A/C) or just A/C (no battery). The charhing circuity won't "cook" the battery. It will stop charging when it is fully charged.Read other 1 answers
I have a list of terms like:
Hello Mother 5
Hello Brother 2
Hello Jackal 1
Is there a way I can get the cumulative frequency of each word in the list?
From the above example, the answer would be:
Any help would be most appreciated.
Just wanted to know if the two sorts of DDR3-1600 SDRAM RAMs (one is called low voltage memory) that are available on the market are compatible with my Portege R930 i7 Toshiba?
The detailed specs of compatible modules are:
+DDR3-1600 PC3-12800, 204p SODIMM, 1.5v+
As you see its standard voltage 1.5V
I've been traveling and I replaced my tablet in Hungary. It's an HP tablet running windows 8.1. Three times after updating (the last time was a driver update) my language was changed from English back to Hungarian. I have followed all the instructions to change it back to English, and every language choice I see is set to English, however the "set as primary language" option is greyed out. The only remedy that has worked is a factory reset.
The option - hide extension for known file type change itself to unticked after I ticked the box and click ok. How to fix this?
There's also a checkbox option to hide or show know file extensions in the ribbon in File Explorer that's easy to click and check by mistake.
If that still doesn't help, then you might see if using OPTION TWO in the tutorial below may. It's the same in Windows 8 as well.
File Extensions - Hide or Show - Windows 7 Help Forums
Hope this helps,
hmm. for a second there, I thought somehow my I.E. unscrewed itself lol .. but apparently not =/ Bah!
<Ahem> I clicked too quickly when I was trying to download a file and managed to unclick the "always ask before.." downloading option. And now, whenever I click on a downloadable file, it automatically downloads into the Temp folder or opens a media player (mp3, mpeg, avi, etc). This has become quite annoying ^^; I've tried searching the net/forums for answers but unsuccessful so far.
So, if anyone could help me change my settings back to the old default settings, i'd appreciate it!!
Windows XP Pro SP 1
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In my efforts to get my programs transferred over to 7, I messed up!
You know when you have a file that isn't designated to open with a specific program, Windows gives you the options to choose the program to open it with, or to search with the Web.
Well when I was trying to figure out which program to use to open the document file that has all my backed up invoice information, I inadvertently, forgot to uncheck the box that says to always use this program to open this file, and since it was the wrong file, I cannot get the box unchecked on it now, because it is greyed out.
Is there a fix for that, so I can get it unchecked and can continue to trial and error the programs to open it with?
Thanks in advance!!!
This will restore file type to default:
Default File Type Associations - Restore
I decided to try a different browser so I've got Comodo Ice Dragon installed & do not want yahoo for my default search so I used comodo help to change it http://help.comodo.com/topic-169-1-413-4518-Changing-Search-Options.html
but it still don't work like a search engine. I do have www.google.com bookmarked, any ideas or am I dumping comode? This is on the XP I have & will add I found the same link via a googlesearch.
@admin, kindly remove this post/thread. I'm dumping Comodo Ice Dragon for a decent browser. Thank you.
Hi, i would like to change the Passwordchg option so to prevent my password to be changed (i know this option could be changed but is a little more complicated), anyway, when i put the command
net user "Administrator" /Passwordchg:no
on my command prompt it throws (may be a not accurate translation)
Operation not permitted, could disable, delete or deny access to the administrator account
Now i dont see why since i could also disable this option (if it would be possible to enable it) and also i know and will NEVER forget my password.
Anyway is there a way to achieve this in another way?
Hi Alesimula, welcome to the Eight Forums.
Windows protects the built-in administrator account in all possible ways it can think of. One of these protective measures Windows has taken is that you cannot disable password changing for the built-in administrator account. This is very clearly told when you try it, either from Command Prompt or using Computer Management console:
Short answer: The message you get is not an error message per se but instead a notification, Windows telling you that the change you'd like to do cannot be done.
When saving emails in Outlook, would like to change the default from .msg to html
Is there a way to do that? We are using XP Pro with Office 2003.
Hi Skyie, Welcome to TSG !!
When you select Save As, a box opens
At the bottom you should see a Save as type box
Click the down arrow to the right of that box and select .html
I was trying to start playing on full screen mode but when I changed my display option I got a black screen and stillRead other answers
My friends Inspiron One 2330 Desktop has been experiencing problems with the display.
I changed one of the boot options to boot to hard drive now the computer boots in a black screen
and nothing appears . It just stays in a black screen. The 2330 allows you to put hdmi in . So i connected my PS4 to the
computer and switched into HDMI mode and the screen was working find.
Now i was trying to remove the graphics card from the 2330 desktop , but it is soldered into the motherboard.
I tried resetting the CMOS to reset the the BIOS but still nothing is displaying on the screen.
I detached the hard drive and booted it up and still the black screen.
If there is a method i should try please let me know .
Like I said before the screen was working find . Until I had changed a setting in the
the BIOS screen .
Thanks for your support if you can help or interested in helping me !
Do you get any indicator lights that the system is booting besides a black screen?
Are there any lights on the monitor?
Try shining a light to the screen what do you see?
Pressing the screen side buttons for menu does the online display come on?
Try resetting the bios once more. This time completely remove the power cord and press the power on button to clear any voltages left in the system, then clear the cmos/bios pulling the battery. Put the battery back in and reconnect the power and boot it.
There are 2 options in the BIOS for my laptop fan:
Silent and Normal.
Right now, it is running under option 1 - "Silent".
This may well be the reason why I don't hear any sound of the fan (unlike my other laptop that has a relatively noisy fan coming ON and OFF from time to time).
Do I need to switch to "Normal" mode?
Will there be any problem in the long run if I stay with the existing setting?
The touchpad area and its vicinity are sometimes hot (not too much though) under the current setting. Has this anything to do with that BIOS option for the fan?
I would put it at whatever mode kept the pc cooler.Read other 1 answers
I have noticed that my computer (and many others) have an option called "PCI-LAN" or similar in the BIOS boot menu (when I press F8 I get the option to choose boot device, HDD, CD, USB and PCI-LAN).
I'm just curious, what is this for, and how could I use it?
Not sure about PCI-LAN, sounds like a NIC.
Are you referring to PXE booting?
That is where you set up an image on a server that people can boot from without having the OS actually on their hard drive.
Hello, My ASUS X-205 has no USB option in 'Boot option' in BIOS. Any suggestion to re-install windows as no optical drive in this laptop. Regards
Hi sahoo56 and welcome to sevenforums,
You might need to enable CSM and disable Secure boot.
In some BIOS's there is an boot override option, have you seen something like that?
Hope this helps!
Hi All Just wondering why HP has taken the num lock option out of the bios. This proved very handy as we use bitlocker with pin and was able to have num lock on for our users saving them the hassle of having to remember to turn it on. Is there anyway this can be added back into future bios updates? CheersRead other answers
Lenovo has released a new UEFI-BIOS version today, version 1.28. Changelog: Version 1.28
UEFI: 1.28 / ECP: 1.16
(New) Added Remote Secure Erase with Intel AMT support.
(New) Added User Selectable RAID function.
(New) Added Hard Disk password on RAID mode(Except NVMe SSD)
(New) Support nVidia new Video Memory
(Fix) Fixed an issue where 32-bit aplication might not work in command prompt.Windows: http://support.lenovo.com/us/en/products/Laptops-and-netbooks/ThinkPad-P-Series-laptops/ThinkPad-P50... Bootable CD: http://support.lenovo.com/us/en/products/Laptops-and-netbooks/ThinkPad-P-Series-laptops/ThinkPad-P50...
WOW! User Selectable RAID ?! I love you man!Any idea why it don't appear under Lenovo Companion app?Read other 5 answers
I have two options (CSM) or (UEFI) in my Toshiba Laptop BIOS. When I select UEFI the computer will not boot. I tried to get Toshiba's tech support to explain this to me but besides not speaking english I did not get a clear answer.
If anyone has the time and knowledge to explain this option and it's uses in simple terms I would greatly appreciate it.
When CSM (Compatibility Support Module) is enabled it allows a modern EFI based PC to operate in a Legacy BIOS mode.
This allows for your operating system to be installed and run from a traditional MBR (Master Boot Record) disk and the advanced features of the EFI system are disabled.
Switching to UEFI mode enables the EFI system. UEFI PCs usually use the GPT file table, which includes a hidden SYSTEM partition and a Windows SYSTEM RESERVED partition.
I am assuming that what you meant to say is that with UEFI enabled Windows will not start, not that the PC will not boot. (If the PC did not boot you could not get into the BIOS settings to change it back.)
I believe that this is because Windows was installed in legacy BIOS mode. I believe that to run in UEFI mode you would need to reinstall Windows or make some alterations to the startup process. I do not know if Startup Repair would help in this case. Perhaps someone else here will know this and comment.
These systems are relatively new. I do not own one yet, so I have not had the opportunity to play with one to get hands on experience. What I know is what I've read.