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[Homebuilt] Error when Booting - Checksum

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September 6, 2010 12:41:08 PM

Lately I've been having some issues with my PC and I was hoping you guys can help me out...

A couple of days ago I started getting an error each time I started my PC in the morning

The error: "The file is posibly corrupt. The file heather checksum does not match the computed checksum" - right before windows should have started booting

After a few restarts it booted ok. Once it booted, I could restart the PC ok with no problems booting again...
If I turn the PC off and let it sit for a while, no problem booting.
The issue only appears after a night's time of being turned off

If I pull out one slot of DIMM the error no longer appears and it boots without any problems.
I then restart, put back the second DIMM and it will boot.

Howerver, waking up each day and disassembling my PC doesn't seem like a very good solution...

I tried:
Checking out BIOS for voltages, frequencies etc., and for instability
Ran MemTest
Ran Antivirus check
Booted with Recovery Disc and remade boot sector

All results where OK, no errors, no problems, no viruses, no instability
But the problem persists every morning.

The PC (except the HDDs) is brand new. My configuration:

Motherboard: Gygabite P55-USB3 - GA-P55-USB3
CPU: Intel i5 760 (with stock fan)
Video: Sapphire ATI Radeon HD5770 Vapor-X 1024Mb
Memory: Corsair 2x2Gb DDR3 TW3X4G1333C9A
HDD1 (primary/OS): Western Digital WD3200KS
HDD2 (slave): Western Digital WD6400AAKS
Power Source: Recom Power Engine M500

OS: Windows 7 x64

Does anybody know what the issue might be?
Do I need to make some special extra settings in BIOS for the CPU or RAM?

Thanks in advance for all your help!
September 6, 2010 2:08:25 PM

just run with 1 stick of ram for a few days and compare how it goes. switch ram, still 1 stick in, and run for another few days and then both at the same time. hopefully if it is a stick it will show up after one of those cool down periods. ur probably finding it works after a while because something is getting to a temp which lets it work, but indicates a gradual failure happening.
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September 6, 2010 2:25:26 PM

Wouldn't a memory problem have shown on the memtest?
I was rather thinking of a memory frequency or voltage issue with the motherboard being a possible issue...

Will give your solution a go... I'll post the results in a couple of days...
Thanks for the reply
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September 7, 2010 12:59:51 AM

not necessarily. once it is running its not likely to fail and error. only cold booting makes it fail.

ur memory is within spec for the board I'm sure.
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September 7, 2010 11:45:18 AM

Yes the memory is fully supported by the motherboard...

First day of the test.
1st memory DIMM
Boot attempt 1: Did not detect HDDs / Could not enter BIOS screen
Boot attempt 2: HDDs detected / Freeze in Windows Logo loading sreen
Boot attempt 3: All OK
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September 9, 2010 2:51:39 AM

nice report, keep em coming
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September 9, 2010 10:03:51 AM

2nd Day

1st memory Dimm inserted
Boot OK

3rd Day

2nd memory Dimm inserted
Boot OK

I'm starting to get the feeling that it's not the individual memory...
Could the voltage be set to auto wrong? I've read a couple of threads about other people having had to set the voltage manually...

Mine is set auto to 1.5V but the real time display shows it to be at 1.486V
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September 11, 2010 10:26:06 AM

3rd Day

2nd memory Dimm inserted
Boot OK

4th Day

Both memory Dimms inserted
Same problem

So.. My conclusion:
Something is wrong with the motherboard or with the memory voltages or frequencies

Does anybody know if there are any settings that I have to change that might affect the cold boot?

I manually set the Voltage to the RAM to 1.5V and the latencies to 9-9-9-24 - Same thing...
I couldn't help notice instead that the RAM voltage changes each time I restart (isn't that a sign of instability) even if it's set to manual (and is never what I set it to be...)
1.5V = 1.486V
1.56V = 1.580V
1.6V = 1.586V
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September 12, 2010 11:41:05 AM

I changed the motherboard battery last night... Restarted today with both DIMMs inserted...

Got the same error 2 times... But... Big Change! Restarted again.. and without removing any DIMM it booted OK the 3rd time...
Over night the power source was turned off.. and the cold boot was done immediately after I turned on the source...

Will try again tonight with the power source left on...

PS: Checked with antivirus... No threats...
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September 12, 2010 10:46:40 PM

Now there's a new error:

System registry file missing or corrupt
File: Windows\system32\config\system
Status: 0xc0000001

Ran Windows Repair
Reinstalled MBR

Still same problem at cold boot...
After it heats up... boots up just fine...
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September 17, 2010 4:29:24 AM

ok, sorry, i haven't got back to you sooner, but.

can u try running the memory slightly slower, something like 1300 instead of 1333 or even try it at 1066. I've noticed with my ram I get occasionaly random errors @1600mhz, running @ 1500mhz runs fine. i've mucked about with CAS and other garbage, but 1500 its stable, disappointing, yes, but stable. cannot verify a faulty stick or faulty motherboard, so I live with it and the performance drop would be minimal if noticeable.

EDIT: voltages will usually never be on target and slight variation will happen, thats ok. but i would stick with the voltage on the sticker on the ram.
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September 17, 2010 11:10:27 AM

Sorry for the delay in posting!

I took the PC back to the warranty service and left it in their hands...
Yesterday I took the PC back home...

The memory was quote "Faulty"

Although MemTest did not show any errors, running the PC with a new memory did not give out any more boot errors...

So... They gave me 2 new DIMMs of memory and everything is running A OK so far...

Thank you guys for all your help in narrowing down the problem!
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Anonymous
a b B Homebuilt system
September 21, 2010 2:23:26 PM

andreiturcu said:
Sorry for the delay in posting!

I took the PC back to the warranty service and left it in their hands...
Yesterday I took the PC back home...

The memory was quote "Faulty"

Although MemTest did not show any errors, running the PC with a new memory did not give out any more boot errors...

So... They gave me 2 new DIMMs of memory and everything is running A OK so far...

Thank you guys for all your help in narrowing down the problem!


I have the same set up for the rams and mobo. Did they give you the same model of rams or did they give you a new model? Do i need to get new rams or would RMAing the rams do the trick?
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