Computer Issues

drvnbysound

Senior Member
Sorry for the long post, but I wanted to be as thorough as possible describing the troubleshooting steps that I have performed so far...

I've built about 8-10 computers over the past 6-8yrs. I had a friend ask me to build one for him about 2 yrs ago. About 6 months ago it was reported that the PC was getting BSOD's pretty often and the computer was pretty much unusable. I picked the computer up and brought it home to diagnose and repair. At first I assumed it was a virus or other HDD problem; I've had similar issues in the past and usually reformatting the HDD and reinstalling Windows had resolved the problem. I ended up doing this a couple of times, but the problem still existed. Then, I assumed that the HDD may be faulty... I had another one lying around, so I installed it in the PC, along with a fresh installation of Windows... still getting random BSODs. That led me to look to the RAM - the Motherboard has (4) DIMMs, and (2) 2GB sticks of DDR3 are installed. I choose to move the RAM from slots 1 & 3, to slots 2 & 4. It seemed that the problem had been resolved. I ran the computer for approximately 2 weeks, using it on occasion and turning it on/off throughout the 2 week period as well. I was no longer able to reproduce a BSOD issue. I contacted the friend and told them that I had solved the problem and I could bring the computer back. Due to illness and various schedule conflicts I have had the computer for a few months. I was finally contacted again recently to bring the computer back... so I decided I would turn it on again just to verify one more time that there were no issues before delivering the computer... and I get a BSOD the first time I turn it back on! UGH!!!

Back to the RAM, I did a little research and decided to give the Windows Memory Diagnostic tool a try. I removed 1 stick of RAM and installed the other stick into DIMM1. I ran the Memory Diagnostic tool (WMDt) and received no errors. I proceeded to move that stick of RAM through all the DIMMs and the WMDt found no errors... I then removed that stick of RAM and inserted the second stick into DIMM 1 - 4 and ran the WMDt while the RAM was installed in each of the DIMMs - again no errors. Note that since removing the RAM and installing a single stick into any DIMM the computer seemed to run fine and did not experience any BSODs.

Then, based on recommendation of BSR I downloaded memtest. I went through the tests as mentioned above (one stick in each DIMM) and let memtest run for a minimum of 2 passes and no errors were found. I then decided to install both sticks again (DIMM slots 1 & 3) and ran memtest again - there were a bunch of errors; I don't recall how many passes it had done, but I believe there were over 2,000 errors. I then moved the RAM sticks to 2 & 4, and ran memtest again; 2-3 passes and no errors were found. I am now on the last iteration of testing both RAM sticks together in each DIMM and have not yet been able to produce any errors. That said, is it possible that memtest would fail when the RAM sticks were installed in specific DIMMs (e.g. stick 1 in DIMM1, and stick 2 in DIMM 3)??

I would have assumed that if the RAM stick was bad, it would fail in any DIMM, and if any DIMM was bad, it would produce errors regardless of what RAM stick was installed.... then again, that's just logic talking!! Any ideas???

Note: I had never documented the BSOD messages, but the most recent ones I received when I turned it on earlier this week was a "Bad Pool Header". I am not sure if that is helpful at all, but I again wanted to try and provide as much information as possible.
 
I have never really done the memtest thing. All I can say is, I had an issue with a PC I build whenever I played a computer game, BSOD. I was blaming the game, until it happened with another game and I decided to look a little deeper. When I google'd the BSOD info, it pointed to a memory issue. I replaced the RAM with a different brand and haven't had any issues since.
 
To me it seems that you have a bad motherboard. Possible the memory controller has gone bad. OR you may have a power supply problem. I have seen bad PSUs cause issues like this too.
 
Check the ram settings on the motherboard to be sure the timings, etc. are correct. Simply resetting the Mboard to whatever its defaults are may not be enough. Look in bios for "By SPD" and depending maybe "XMP" either of which can sort of "automagically" setup the ram for you.
 
I checked the BIOS settings yesterday, and all of the RAM settings are defaulted to AUTO. BIOS also displays the proper speed and timing settings for the RAM that is installed.

I also wanted to mention that I built 3 other computers based on the same hardware (though different processors were used in a couple of them), but I have used this combination of RAM and MOBO on other builds and had no issues. So it's certainly more of a hardware problem than any sort of compatibility issue.

I just let the memtest run on the last iteration of having both sticks installed. It ran 6 passes and no errors were found. I am going to switch it back to the original placement and see if errors occur again - the only combination that I have received any errors with...
 
I am starting to think that I may just have a bad stick of RAM. I just noticed that memtest displays the RAM that is installed at the middle/bottom of the page.

When the original RAM is installed, I believe only 1 stick of RAM displays its information; not sure if that is a tale-tale sign of being corrupt or not.

Noting the above, I grabbed another computer that also runs DDR3 memory and has 2 sticks installed and ran memtest - both sticks show their information. I then took those 2 sticks and inserted them into the "faulty" PC and again, both sticks show information during memtest. I need to test with the original sticks again, but I am 99% sure that only 1 of them is displaying it's information...
 
Was only able to skim over the post, but have you checked the capacitors? I have seen the same exact behavior caused by bad caps.
 
I had a problem with one computer. Same model of MB used in other computers worked fine. Checked some forums. Others had same problem with same MB. Changed MB. Problem gone. MB in trash.

YMMV.
 
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