Random shutdown with no BSOD Win 7 Ultimate 32 bit

I cant find a "crash and debugging" forum section?
I keep ending up here? But i have no BSOD.
Is this the best place to post this? If not pls move?

We have 3 systems from 6/30/11 Windows 7 Ultimate 32 bit.
DB65AL motherboard. Intel i5-2300 2.8GHz, 4GB RAM
All ran flawlessly for about a year or so. With Updates enabled.
Then 2 started having random shutdowns with no BSOD.
It got progressively worse so we had to replace them.
The third system is still in use but sometimes has to be started 2-3 times in the morning.
I'm running the SF diagnostics now on system 1 that has another hard drive with a fresh install of Win 7 Ultimate 32 bit. It has older PSU, HDD, and is now using onboard Intel video as well.

I tried tweeks to every Intel Power management settings etc and Win power, sleep, hibernate, etc etc. but still had the problem.
I previously tried every BIOS, driver update, but there are some newer Intel ones I found since I last tested a few months ago. Ive installed them so lets see if the problem goes away. Same BIOS but newer Intel onboard video, Realtek audio, and onboard Ethernet?

So far I havent been able to duplicate the problem. Im working on it.
So Im not sure if this capture is relevant or not.
Any suggestions?

The hard drive, power supply and EVGA video card out of this test system have been running fine for months in other systems.
System 1 ran idle over the weekend with no issues.
System 2 we ran Linux off a CD over the weekend with no issues. It had its HD removed moved to an old system re installed Ultimate 32 for the user and is up and running there. Also the DVD drive.

I'll let the test system run all this week and post results.
The test system only has the original case switches, Motherboard, CPU, Memory, DVD. Different PSU, Hard drive, no video.
Seems like its some low level interaction between Motherboard drivers and Ultimate like the power management.

So far it didn't seem to be heat related, PSU, Sleep, Hibernate, Intel Power management.
Happens with 2 different EVGA video cards.
Extensive memory tests reveal no issues with memory.
No viruses or malware detected.

Do some disc checks.

1. Reseat the sata and power.
   
2. Change the Cables connecting the disc.
3. Try another port on motherboard to attach the disc.
4. Run chkdsk /f/r, following the option two of the tutorial Disk Check
5. Seatool for dos: SeaTools | Seagate download
   Burn it in a blank cd. boot from the CD, click on "Accept", wait for it to finish detecting the drives, then in the upper left corner select "Basic Tests", then select "Long Test" and let it run.

BTW, how old the HDD is? Is the HDD hot? Report us the heat of the computer after a couple of hours of your normal usage. Upload a screenshot of the summery tab of Speccy.

Post a screenshot of the HDD using CrystalDisc Info.

Nice ideas, great diagnostic procedures, Thanks, I really appreciate the feedback.
Two of the systems hard drives were removed and put in other PC's for the users.
One was syspreped /generalize /audit then OOBE and moved, the other was moved and Ultimate 32 reinstalled from DVD. Both have been working fine since.
I think all 3 are Western Digital < 1Tb drives. From 6/11, so not too old.
I'll check on the third one today and maybe try some of this out and verify the model too.
I know in my previous attempts I pushed in all the SATA and power cables but maybe didnt fully remove and reseat all of them.
Also I did remove and reseat the power harness to the motherboards.
I'll let you know what I find.
There is only one "blue" SATA port thats 6 Gb/sec vs 3 for other 4 ports. But good for testing.
System 1 is on my bench running for testing with different Western Digital HD. (no failure so far )
System 2 is destined to eventually be a Linux Box with a Seagate.
System 3 is still in service. (never shutsdown, just an intermittent start up issue, hw?, drvr?)

Delphin25 said:

I think all 3 are Western Digital < 1Tb drives. From 6/11, so not too old.

What I am seeing about your HDD ....
No code has to be inserted here.

So it is a 80 GB WDC WD800AAJS-22PSA0 HDD, those are released in 2008. That is why I asked. If it is really that old, it might be failing itself, whereas the controller error is present everywhere in your event log.

Code:

Event[2456]:
  Log Name: System
  Source: Disk
  Date: 2013-01-14T15:38:56.842
  Event ID: 11
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: SoftwareTest-PC
  Description: 
The driver detected a controller error on \Device\Harddisk1\DR1.

Let us know the results that you obtained.

Yes this was an old HD used for testing in a pile in the dept. I loaded it up to see if I could reproduce/isolate the shutdown problem. The HD that was in there is in use in another system for same user with no issues so far.
But what are the controller errors? Have to dig in to this some more. Maybe its just this old HD.
I dont recall ever seeing this error in the logs before.