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Header checksum of file doesnt match computed checksum

Q: Header checksum of file doesnt match computed checksum

Hi All,

I have been trying to install Windows 8 64 bit retail version on my PC for the last 6 hours without success . After the 1st part of the install where you choose the disk and partition to install to, then it copies files etc, the PC does a reboot, which is normal for this part of the install. However, I let the boot sequence continue without selecting dvd of course, then it tries to boot from the hard drive but I get an error.

The header checksum for this file doesnt match the computed checksum.
File: \Windows\system32\winload.efi
Error Code: 0xc0000221

My system was previously running Windows 7 Ultimate 64-bit for years without any problems. This is not an upgrade, I am starting from a clean slate with a fresh wiped drive with no partitions.

System specs:

AMD FX-8150
Gigabyte GA-990FXA-D3
8GB DDR3 1333Mhz
XFX Radeon R9 270X
Samsung 840 120GB SSD (Trying to install fresh win8 to this)
Samsung 840 120GB SSD (Unplugged during this install for ease)
WD Black 1TB HDD (Unplugged during this install for ease)

I have tried both SSD's and also another Samsung 500GB HDD all with the same result.

I have tried the following:
- Win8 Install DVD - Automatic repair - fail
- Startup repair - fail
- Bootrec fixboot and fixmbr and BCDBoot commands successfully
- SFC /scannow gets to 100% but reports that its unable to do anything or something like that
- bootrec scanos shows 0 installations of windows (likely due to it not finishing one yet lol)
- diskpart list volumes shows the 4 partitions that the win 8 install creates, 100mb ntfs recovery i think, 100mb fat32, another one, then the large c: ntfs partition.

Im thinking that its more related to the motherboard and BIOS configurations but i cant be sure.

I have tried IDE and AHCI without success.

An interesting fact is that I cannot get the Win8 DVD to boot properly with the BIOS setting for the CD/DVD drive set to Auto or NON-EFI. I have to set it as EFI to be able to make it to the language and country selection page at the start of the install.
If its not selected, the dvd will start with the blue windows logo, then white loading circles appear beneath it, then it goes to a black/blank screen forever. Until I power off or reboot.

I have checked the gigabyte site and it says the GA-990FXA-D3 is Win8 and Win10 compatible.

I dont know what else to do. Any ideas?

Preferred Solution: Header checksum of file doesnt match computed checksum

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.)

A: Header checksum of file doesnt match computed checksum

I replaced the Corsair 4x4GB (16GB) DDR3 1333mhz with a set of 2x4gb (8gb) DDR3 1333mhz Elixir ram from my other machine.
The 64-bit DVD booted all the way to the installer this time with bios in AHCI mode and CD/DVD set to Auto/Non-EFI (1st time it has ever worked). The installation went on without a hitch and rebooted fine without a checksum error and I am now using the install to post this message without problems.

The RAM was the problem all along, although worked fine on Win 7 for a couple of years. Just must not like this new system setup.

Thanks to Mike Barnes from tomshardware for the suggestion.

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When I don't mess with the BIOS, I get the error message, "Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key_" If I change HDD priority, I get, "The file is possibly corrupt. The file header checksum does not match the computed checksum."
MoBo: Asus P5e3 Professional (M4A78-E)
Win7 HDD: Western Digital Caviar Blue WD5000AAKS (SATA)
WinXP HDD: Western Digital Caviar Blue WD600JB-00CRA1 (IDE with SATA adapter)


Boot Device Priority:

1st HDD: WD600JB
2nd HDD: WD5000A

Outcome: Reboot and Select...


Boot Device Priority:

1nd HDD: WD5000A
2st HDD: WD600JB

Outcome: Reached boot selection screen. When OS selected, computer reboots. Screen blank, and computer unresponsive once it reaches the point where the Boot select screen would be.

A:[SOLVED] The file header checksum does not match the computed checksum

I think I know what the problem is. Hopefully, it's just my video card drivers screwing around. If that's the case, I'd just have to enter the OS in safe mode and delete the driver or just format the HDD. The problem is, it won't let me get to any such screen. Either the file is possibly corrupt, or it restarts.

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My Dell Inspiron 1521 laptop won't get past the Dell logo at startup, resulting in a black screen with the error message:

"The file is possibly corrupt. The file header checksum does not match the computed checksum"

I shutdown my laptop normally last night and booted it up this morning and received this error message. I have not added or changed anything.

So far I've run the Windows hardware and memory diagnostic tool (F12) and there were no errors. I also tried to run the Windows Vista Repair/Reinstallation DVD that came with my laptop; however, none of the repair options will work and the Windows Vista install crashes each time.

Startup Repair provided the following problem signatures:



Can anyone suggest how I may begin to recover my laptop?

Help! Any technical assistance would greatly be appreciated.


A:File is possibly corrupt. File header checksum doesn't match computed checksum.

Could be your Hard Drive going faulty

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Hi All
New build PC with Windows 7 32 bit, I keep on getting the following error message on start up after 30 mins of shut down ?. The file is possibly corrupt. The file header checksum does not match the computed checksum
Then I Alt+Ctrl+Del and the PC fires up ok.
The only peripherals connect are mouse, keyboard, and a Monitor, once booted up and running I have used the following to check things out:-
Windows Device Manager:- All items are working correctly with no exclamation or question mark warnings. I have update all drivers for all devices.
Windows computer maintenance: Again all items check OK and are working.
Intel Application Accelerator Raid:- again all Hard drives and their raid configurations all check out as OK.
If I restart the PC all is fine, if switch off the PC and restart within 10 to 20 mins all is OK. However if I switch off and re-start after 30 mins the checksum error message reappears.  
Any advice or assistance would be appreciatedThanks Zee Man

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A few days ago i recently got the "blue screen of death" for the very first time running windows 7..

Today i left my laptop on and went to sleep when i woke up it was trying to boot...
but was stuck on this error "The header checksum does not match the computed checksum"

I tried booting again but got the same error... i ran ubuntu live cd and tried to save my data files but it wont access my hard drive either... neither can i run recovery since it was also on a partition on the hard drive.

I have an HP Compaq CQ 70..
3GB Ram
Dual Core 2.0
originally came with vista i upgraded to win 7
Kindly help me recovering the data...

A:Cannot Boot Windows 7 "The header checksum does not match the computed checksum"

If you can't access w/Ubuntu, then it's likely that there's a problem with your hard drive.
Each use of the hard drive increases the chance that you won't recover anything. I'd strongly suggest looking into professional data recovery services - but be aware that they are very, very expensive!

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hello this morning i turned my laptop on and recieved this error message the file is possibly corrupt. the file header checksum does not match the computed checksum. I've tried using the recover cd and alt f10 but the error seems to kick in before i can do anything any ideas??

A:the file is possibly corrupt. the file header checksum does not match the computed ch

You need to boot from the CD. Enter BIOS setup and change boot sequence so that the CD/DVD drive is the first boot device. Then you can boot from the recovery CD.

Note, using a recovery CD will erase the entire hard disk and you will lose any documents, emails etc on the hard disk.

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I have a HP dv7-3065dx 4 gig ram and 500 gig HD window 7 home prem 64bit. I pulled the mother board and had the GPU reballed and copper heat sink added for cooling. Now I have put it all back together and it will nor boot from factory disc or from the hard drive. I have tried a couple of hard drives including one new and one from another dv7 that is working. I have also pulled the ram and replaced it twice. I get the file is possibly corrupt. The file header checksum does not match the computed checksum and also got this error also BOOTMGR image is corrupt. The system cannot boot. Is it possible I missinstall the board causing these errors, help help!!

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Can you help me my error message blue screen - the header checksum does not match the computer checksum advapi.dll

any help?

A:Error messages the header checksum does not match the computer checksum advapi.dl

Either there is a corrupted file in the Windows file or it could be caused by bad RAM. "Bad Image Checksum" Error When You Upgrade to Windows XP
Download the ISO image for Memtest in my signature, burn the image to CD using IMGBurn. Boot off of the newly created CD and run the tests with ONE stick of RAM in the computer at a time. If there are any errors, that stick needs to be replaced.

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Dell Inspiron 1525, Vista. AVG free, Adaware, Spybot S&D. Scans done weekly, no problem noted prior to this.

Daughter called me at work bent out of shape because she gets this on startup:

" The File is possibly corrupt. The file header checksum doses not match the
computer ed checksum..." All of her summer howework is on the HDD and she's no happy. She's been warned about not having backups, but she knows everything at her age...maybe this will get her attention. She says it flashes the Dell logo at start up and then goes to a black screen w/this message.
My search here kept coming up w/"IE cannot display this page...", so I thought I would start a new entry and hope somebody might have something to offer by the time I get home to look at it.

FWIW, this is a laptop on a wifi network. AVG on another computer on this network started giving a virus alert yesterday, (mentioning smitfraud), AVG scan found nothing, Panda online scan found nothing, and Spybot found nothing. That was my project for this weekend, but I guess it goes onto the back burner now. I do not know if there is a relationship between these two issues.

Any help anyone can provide will be greatly appreciated.


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I have a Toshiba running Windows 7. The computer was having a lot of problems with opening files, getting on the internet, etc. It would boot up but then wouldn't do anything else. I have the Toshiba recovery media CDs which I have used in the past when the computer got a virus. I tried to use them again. This time it went through the process on CD1 but after pressing finish, it now gives an error when trying to boot.

The file may be corrupt. The file header checksum does not match the computer checksum.

I tried taking the CD out and booting up and got the same error. I tried putting the CD back in and redoing it but still get the same error. Are there any suggestions?

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Hiya, got a sony vaio VGN-FZ21M, and I think I got a problem with it
In fact it starts by doing the blue screen, and then started with that message:the file is possibly corrupt. the file header checksum does not match the computed checksum.

Well I'm a bit worried the computer just start to turn off-restart- and sometimes It's very difficult to log back on... It's just weird...

Anyway.. Hope you gonna be able to help.. Thanks in advance...

here is my logfile

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 20:31:58, on 24/01/2010
Platform: Windows Vista SP2 (WinNT 6.00.1906)
MSIE: Internet Explorer v8.00 (8.00.6001.18882)
Boot mode: Normal
Running processes:
C:\Program Files\Windows Defender\MSASCui.exe
C:\Program Files\Apoint\Apoint.exe
C:\Program Files\Sony\ISB Utility\ISBMgr.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 2009\avp.exe
C:\Program Files\Adobe\Acrobat 8.0\Acrobat\Acrotray.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
C:\Program Files\Virgin Broadband Wireless\Wireless Manager.exe
C:\Program Files\Java\jre6\bin\jusched.exe
C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Program Files\WIDCOMM\Bluetooth Software\BTTray.... Read more

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Hi all...

I have the error "........checksum does not match the computed checksum"
I've been trying to research the problem and it seems i need to do a repair from an xp installation disc.

Unfortunatley, i cannot find my disc. I have XP home edition on an Advent laptop.
I have access to a XP professional disc (Dell).

My question is, will I be able to use the XP pro disc to do a repair on my xp home edition?


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As of two days ago my computer will not load all the way to the desktop screen. Most of the time I turn off the computer and turn it back on again the computer loads a little and then turns itself off. I ran diagnostics and it said the computer failed the memory test. As of the last time I turned it back on the screen read ...

"The file is possibly corrupt. The file header checksum does not match the computed checksum."


***Also, after opening the computer to find the RAMs - the fan is not clean. Obviously this is a problem, but could that be the initial cause instead of a bad RAM? On cleaning the fan ...I've never done this before - precautions? Is there a risk of me or the computer getting shocked? There's videos on how to take out the fan and clean it but they don't say if there is a risk.

A:"The file is possibly corrupt. The file header checksum..."

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I would to update the Ideapad 520S 14IK (81BL) bios (4QCN43WW) but the checksum doesn't correspond.
Lenovo site checksum : SHA-256:6f3814d904ee75083498c8d3b32d31591a56959d73db91692484f01470babfe3
My checksum : SHA256: DCF341EA04DD11014093FFD6071EC20A48A89E832995F6A9F764B5A0FC665DB9
Do you think they have forgotten to update the checksum on the site ?
Thank you.
Mod's Edit: Additional information added to Subject line for clarity of issue.

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On pagehttp://support.lenovo.com/ar/es/products/Laptops-and-netbooks/Lenovo-B-Series-laptops/Lenovo-B50-80-... bad checksums (MD5 and SHA1) are obtained for the product:Lenovo Solution Center for 64-bit Windows (lscsetup_x64_32004.exe) and checksum data is missing for the following products:BIOS Update Utility (a8cn47ww.exe)Lenovo VeriFace (veriface_tools_w7.exe) 

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Hello everyone don't know on what topic I should post this but I think Windows is almost right.

So for some weeks ago I migrated some files from my SAN to my NAS and then back to another SAN. After this was done I notice some really strange bit-errors by generating MD5 checksums on random files.
After this I did some digging and come up with this, that smaller files seems just fine but when it comes to bigger files example ISO files over 7 GB the error seems more recurrent.

Do anyone have a good explanation on what can cause this, I transferred the files with FTP so I believe that the TCP checksum should take care of errors just like this and probably many other build-in features.

Any input is good input

A:Strange error on file transfer checksum

Hi sebhol,

In practice, errors can happen due to how FTP is used (configuration settings, especially if command line) and errors could occur if there was a faulty piece of hardware somewhere, such as with memory.

This type of thing is unlikely, but does happen.

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4 year old foxconn diy box.
flashed bios successfully 3.5 years ago and everything was fine.

I have wiped HDD and reinstalled xp pro sp3 several times over the years. I decided that it was time again. Unplugged everything and air compressor blew out the box. plugged everything back in. On boot:
cmos checksum error
f1 run setup
f2 load defaults and continue

Ive never seen this before.

f2 usually lets it boot into xp

f1 I make changes, but on reboot it gives me the same error. On entering f1 again I see that no changes that I make stick.

moved jumper to reset. Put jumper back and still have this issue. Battery was 3.08 volts. Still I tried a new battery. Still have the issue.

old install of xp getting slower and more buggy, so decided to reinstall despite this issue. Reinstalled xp pro sp3 and my other programs early last month. Its much faster now and not buggy anymore, however I still have the checksum error, not that I expected this to fix it.

ideas to fix checksum error??


A:bad checksum

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Can anyone help me?
My PC keeps rebooting when it starts to load Windows. I tried to start in safe mode and got the following blue screen error: STOP : c0000221 {Bad image checksum} The image wininet.dll is possibly corrupt. The header checksum does not match the computed checksum.

A:bad checksum

Hi and welcome to TSF please see these "Stop error code 0xC0000221 (STATUS_IMAGE_CHECKSUM_MISMATCH)" error message occurs
"Bad Image Checksum" Error When You Upgrade to Windows XP
Error Message: STOP: C0000221 Unknown Hard Error or STOP: C0000221 STATUS_IMAGE_CHECKSUM_MISMATCH

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hi i just tried to download the new detections in spybot and i am given the error ' badchecksums' is anyone else getting this error, or know what to do?

A:bad checksum???

i found a post dated 19th of march saying that recent high demans may lead to bad checksum errors, maybe this is happening again, should i contact the website?

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My computer had a flat CMOS battery. When I tried to start it up it said WAIT.... then CMOS Checksum Bad
CMOS Display Type Wrong
Keyboard Error

Press F1 to goto setup
Press F2 to load defaults and continue
Only both of these options don't work and it just hangs there. I replaced the battery and it made no differrence.
How do I get past this screen?
Could it be the motherboard or faulty ram?

A:Checksum Bad

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Ok, so im an ***** and tried to update my BIOS. I downloaded the update from the Intel official site and followed directions. The update was the type of update you can do while windows is running, so i gave it a shot not really knowing anything about what i was doing. The program ran fine, installed fine i guess, and was restarting my computer. It took awhile to log off, but i sat and watched it until it powered down. Computer rebooted, and i get a CMOS Checksum Bad Error.
My motherboard is an Intel D845PT. Ive tinkered with the BIOS for ages, and even tried the IFlash BIOS update with a floppy, only to find out this model of MOBO doesnt even use Iflash, or its not compatible. And yes, im using a fairly new CR2032 Battery. MY COMPUTER BOOTED JUST FINE, AND WORKED JUST FINE BEFORE REBOOTING TO UPDATE BIOS! Anyone have any ideas how to fix this?

A:Cmos Checksum Bad

That's strange when I check for your correct Bios at Intel : http://www.intel.com/support/motherboards/desktop/d845pt/

I get "Download Not Available"

You may need to contact Intel, on what's happened to it

By the way, where did you get the Bios update from?

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I am using a Inspiron N4010 Laptop. The laptop is oow. Since 2-3 weeks, when i turn on the laptop, i get the following error :
0271 : Check date and time settings
0251 : System CMOS Checksum bad - Default configuration used
Press <F1> to resume.
Is this a problem with the CMOS Battery ? Will replacing the CMOS Battery solve the problem ? How much it will cost to replace the CMOS Battery with the help of a Dell Service Technician for a out of warranty product ? 


A:CMOS Checksum Bad

Welcome to the community
First point of failure will be the CMOS (Coin Cell Battery) Please take a look on this link to check manuals and see how to replace it.
If no go, check this link for Service Centers http://dell.to/z5ccMr  
Let me know if further help is needed.

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Windows XP Pro SP3 will not start up, not even in Safe Mode. The blue screen says "STOP: c0000221 (Bad Image Checksum) The image oleaut32.dll is possibly corrupt. The header checksum does not match the computed checksum"

Any suggestions Please ?

A:Bad Image Checksum

Boot off of the XP CD Or download the Recovery Console ISO. Burn it to CD with IMGBurn and get to the Recovery Console. Here type chkdsk /R and press enter. The Check Disk utility will try and fix any file errors.

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I have a Dell Optiplex GX 280 XP that I bought off eBay maybe 4 months ago. I am getting the following message

stop:c0000221 {Bad Image checksum} The image is possible corrupt. The header checksum does not match the computed checksum.

I was at the Microsoft web site updating the other day when I suddenly had to leave town, since I was an hour or two from being done with the update I canceled the update and shut down the computer. Surely this is irrelevant since the download was never finished and installed. Previous to this I had noticed that the display was vertically unstable. One roll of the mouse wheel and the screen would jump up and down and then end up no where near where I had intended. I figured before working on the display issue I should be sure to have all updates. May this info is important maybe not.

Thanks is advance

A:Bad image checksum

From your post it is not clear when you are seeing that message.

Does it occur on boot-up? Is it preventing you from starting?

It means something you are running has a corrupt file -- but we don't know what.

Why not just run System Restore and return to a date before you started receiving it?

run: msconfig > Launch System Restore and choose a prior date. You can undo these if needed.

You may also want to consider updating any display drivers for the system if the display problem continues.

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Ok Here goes , I get a checksum error everytime I get into explorer. On the info bar it says "CheckSum Error" after that it says below "File is corrupt please obtain new copy". It won't tell me what file or anything. I know this could be a number of things.

I noticed also when I go to your site it says on the top of explorers info bar (not the adress but the very very top bar with the minimize n' all that) Right now it says:

Tech Support Guy Forums - Post New Thread - OzComm. It Should Say Alltel instead of OzComm. Could this be the problem. If so, how do I fix it. I'll stop now before this get's to long. Thanks Much.

A:Checksum Error

Welcome to TSG!
I am going to move your thread to Security so they can have a look at what may be running and possibly affecting your IE.

Be patient and they will help.


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How to recover from CMOS checksum bad. Have a MSI mother board K9N.

A:CMOS checksum bad

Hi jake426426Check this article CMOS Checksum Bad Error and see if any of the solutions given work for you.PaulineEdited to fix link

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When I restart my computer it always goes to a screen that says CMOS BAD CHECKSUM then I press F1 to start the computer. I have to update my date and time and then everything seems to work fine. But when I click the arrow on the right side of my toolbar it just shows white spaces and I cant use that area not even the volume. Also Microsoft essentials will not work then recently Windows update stopped working. My computer seems to run slower in general. I don't think its a virus since this all started while my computer wasn't connected to the internet. I also replaced the battery on the motherboard.

Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.130318-1533)
Language: English (Regional Setting: English)
System Manufacturer: eMachines
System Model: ET1831
BIOS: Default System BIOS
Processor: Pentium(R) Dual-Core CPU E5400 @ 2.70GHz (2 CPUs), ~2.7GHz
Memory: 4096MB RAM
Available OS Memory: 3840MB RAM
Page File: 1618MB used, 6058MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)

A:CMOS Bad Checksum

When you say you updated the date & time, was it in Windows or in the Bios setup after replacing the MB battery ?

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Checksum error

I have a friend who is getting a "Checksum error" after the computer loads.

He clicks on OK and all is well.

Any ideas?

A:Checksum error

Have him replace his cmos battery.

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i went on vacation for two weeks ,when i returned and turned on one of my computers it came up with a message checksum failure, what does that mean? Also, (has nothing to do with above situation) what does error 28 mean on windows 98?

A:checksum failure

Checksum failure is probably being caused by the cmos battery needing to be replaced soon.

Code 28
The drivers for this device are not installed (Code 28).

To reinstall the drivers for this device, click Reinstall Driver
Solution button: Reinstall Driver

This code means the device was not installed completely.

To resolve this issue, follow the recommended solution. If that does not work, try removing the device from Device Manager and using the Add New Hardware wizard to redetect it. You may need to obtain updated drivers if the error still occurs.

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Hi guys, I'm feeling dizzy right now and seriously, I didn't know which part of the forum should I post this question... Anyway, here's what happened...

1. I tried to make a primary master, and slave for my two hard disks...
2. I did a trial and error with the first one, I did try to follow the instruction on the surface of the disk though. I'm referring to the jumpers...
3. I tried to to take off all the jumpers from the second hard disk, there seems to be no problem with this.
4. Probably, step number two caused the error... After having switched on my computer a weird sound came in... It's different from when the RAM is not inserted properly. Something tik tik tik tik tik like a clock ticking...
5. I tried to remove the battery, after putting it back I get a checksum error...
6. I resorted in this forums...


A:Another checksum problem....

Welcome to TechSpot
First thing to check is the instructions for each of the HDs to properly set them as Master and Slave. Do NOT use the Cable-Select option.
Second, make sure you have the proper flat cables (40-wire up to ATA66, 80-wire for ATA100 and up), inserted with the red ribbon on both HD's and motherboard at the side where pin 1 is marked.

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With some legacy system we still use XP, and it was sorry to find that https://www.microsoft.com/en-us/download/internet-explorer-8-details.aspx actually doesn't work, as we cannot download IE8 following the link.
For a previously downloaded file whose name is: cn_windows_internet_explorer_8_for_windows_xp_x86.exe
Could you tell us the authentic SHA1 code for that?


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My Packard Bell iPower is great but it does something very annoying every time I turn it on.

Basically, I turn it on and it begins to boot up and I see the PB splash screen. Then in the blink of eye I sometimes manage to catch a glimpse of a black & white DOS error message ? CMOS Checksum Bad ? then the machine mimics a re-start and once again displays the PB splash screen then proceeds to boot into Windows 7 just fine.

Bizarre..but annoying..very annoying.

Any ideas of how I can resolve this?

A:CMOS Checksum Bad

My Packard Bell iPower is great but it does something very annoying every time I turn it on.Basically, I turn it on and it begins to boot up and I see the PB splash screen. Then in the blink of eye I sometimes manage to catch a glimpse of a black & white DOS error message ? CMOS Checksum Bad ? then the machine mimics a re-start and once again displays the PB splash screen then proceeds to boot into Windows 7 just fine.Bizarre..but annoying..very annoying.Any ideas of how I can resolve this?Replace the CMOS Battery: http://www.infopackets.com/graphics/cmos+battery.gif

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I am having a problem getting a computer to start up. When we turn it on, it will run throught the memory check and that is it. We cannot get to the Bios setup. Nor can we use the keyboard to type anything. The keyboard will not work. I have changed the CMOS battery and reset the CMOS jumper. Does anyone have amy ideas?


A:CMOS Checksum Bad

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Hello, I am having trouble starting up my computer. It takes me anywhere from 5-50 times of turning the power off and on to finally get it to load up XP. Most of the time after the startup screen that shows "COMPAQ f1 setup f10 system restore" the screen just goes black and hangs. I have also seen checksum errors on my screen of 0251 and 0271. I have posted 3 pictures of the errors here: www.trackrecordz.com so maybe someone can identify the problem. Please explain (step by step would be great) what i need to do to fix it or any suggestions.

I have a compaq presario S4000NX which is about 1 1/2 years old and win XP.

If any other info is needed let me know....

thank you very much in advance

A:checksum bad errors

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Anyone had any problem with CHECKSUM ERROR- DEFAULTS LOADING, then it asks to press F1 to continue or DEL to enter bios, but nothing happens.

NEXT ???


When I ran into this problem, seems like I just replaced the BIOS battery (CR2032) on the motherboard and it went away. After replacing the batt, go to Dell's website and see if there are any BIOS updates just for the heck of it.

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I'm trying to put together a system using ecs k7vta3. Machine is dead unless I put the cmos jumper in the clear position and leave it there. However, even when I do that I get "cmos checksum error defaults loaded". I used ddr 2700 (333mhz) which I believe is compatible with specs of board which is ddr200 -ddr333. Memory shows good on boot up.

When the cmos checksum error is displayed I can't get into the setup to change anything. Nor can I by pressing "delete" upon bootup. My guess is I need to exchange motherboard. Any thoughts? Thanks

A:checksum error

When did you first experience the "dead" system. Had you just made changes to the configuration? hardware? BIOS flash gone horribly wrong maybe?
More info on this would be of help. Such as what was done between the last time it booted up normally, and when you booted and found it to be dead.

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Perhaps someone can help me.

I am looking for a checksum utility to verify the contents of a burned CD against its master or a copied floppy against its master.

I am hoping there is one that might meet my needs. I need it simple enough so a nearly computer illiterate individual can use it (i.e. click button, select media type, click go). I would also like it to work under the following configuration.

A stand alone machie with 2 cd/dvd drives and 2 floppy drives. Tester places master in drive 1 and copy in drive 2, clicks a button, and the utility says its either good or bad.

I don't mind paying for it as I'd prefer it come from a reputable company. I need to be able to validate the software for our quality department to bless it off and it would help if it isn't freeware.

I can get our software team to develop something, but i'd rather just buy something off the shelf.

Does anyone know if there is something on the market that might be worth looking into?

Thanks in advance,


A:Checksum utility

Microsoft File Checksum Integrity Verifier (FCIV) utility

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I built my 1st pc about 2 months ago and it worked fine. But recently there has been a 'checksum error' message that comes up before the windows screen loads, but i just ignored it. However, soon after i was having problems with logging on (it wouldn't). I could only log oin in about 1 in 5 attempts. The gap got bigger and now i cant, not even into safe mode. Has anyone else had this problem? If so help would be apreciated.

amd 64 3500+
asus a8n sli
corsair pro dual 512mb ram
400W PSU
SATA 200gb maxtor diamondmax
Windows XP
All bought form new

A:'checksum error'

I'm thinking way back - but the last time I got that error I believe it turned out to be my CMOS battery. You might check it out, but I'm not really sure.

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I have been trying to download a certain bit of software, but every time I try, I get 2 messages part way through the download. The first says, "checksum mismatch. This installation is corrupt, or has been tampered with. If you downloaded this file from the Internet, try downloading it again." The second says, "Couldn't read TOC. Aborted."
My question is 2fold. First, is the problem with the software, or my machine? Second, if the problem is with my machine, what should I do about it?

I have tried changing the settings on my firewall, but that is about as far as I have gotten with the troubleshooting.


A:Checksum Mismatch

The first message suggests that the file you are trying to download is corrupt.
If you download a new copy and still get that message, then the file itself is corrupt and its probably not being corrupted in the download process.

The second error suggests you are reading the file from a CD though, and not over the internet as a download.
The message suggests the CD is damaged or corrupt.

Do both messages emanate from "downloading" from a CD perhaps? If so, the CD is probably damaged.

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the problem is when i start up the computer i get a messege saying CMOS checksum error defaults loaded. press f1 to continue.

Even if i change a setting in the cmos it seems to reset its self next time i resart up the computer.
Any idea's whats wrong ???

Thanks ipatriot

A:Cmos Checksum.......

The first thing to check is your battery. Is it new, old, dirty, improperly seated?

If the battery is new and installed correctly, scan for viruses. Go deep. Be thourough.

No viruses? Check you power supply. Errent voltages of a "getting ready to die" P/S can cause checksum errors.

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What does that mean. I'm running XP Home.

When I try to start my laptop is says:

STOP:C0000221 {Bad Image Checksum}
The image ole32.dll is possibly corrupt. The header checksum does not match the computed checksum.

A:Bad image checksum

That indicates a serious corruption of that file on the hard drive. It is a system file, andWIndows has detected that it is damaged.

Look here for guidance:

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So im using PCCheck 5.50 to run some hardware checks and first off on the mobo test it comes up with a failed CMOS test. Secondly i believe the reason this computer has been just randomly restarting is because it has bad ram, further investigation with this program has shown that the ram doenst pass any of the diagnostics.

but i already figured the ram would be bad, what about the cmos. do any of you ahve any idea' swhy or what might cuase that?

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Hello, just put together a new computer, stats are as follows

ASUS k8v SE delux mobo
amd 64 3400+ cpu
1024 mushkin pc-3200 ram (2x512)
radeon 9800 pro
350 watt antec pws
80g 7200 rpm western digital hd

Opens with a bad bios checksum, asks for asus disc, erases and rewrites bios files, asks to turn of system and restart... and then the same cycle repeats itself. This is the second time it has happened, I've swapped out the mobo and cpu for replacements(the first time the problem gradually got worse until the system woulndt even turn on), bought a new harddrive, changes pws from 350 to 380. Tried booting with only one stick of 512. Wiped cmos information, replaced battery. Still get the error, i have no idea what could possible cause thise and the chance of recieving a bad motherboard two times, consecutively isnt very likely.

Any help would be greatly appreciated....

A:Bad Bios Checksum

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