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Windows 7: Desktop PC reboots randomly, sfc errors each time

21 Jan 2014   #11
derstrom8

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by ICit2lol View Post
Yes mate I know I have exactly the same one in my Sandy Bridge and a HX 1050 in my Ivy but if I were having these problems if only for purposes of elimination I would just test those leads and sockets. Like I mentioned new doesn't necessarily mean it is good it is like anything you buy cars fridges whatever it can go wrong from day 1 to whenever.
I understand, I'll give it a shot. But what is really confusing me is that it consistently tries to reboot 3 times before starting up. That doesn't sound like a power issue anymore, that sounds more like software telling it to try one thing, if that doesn't work, try another thing, etc. until it works. But then again, I'm just thinking out loud, I honestly have no idea.

Quote:
Now in the 101 ref there is a part (Section 2 - Voltage rails) which refers to the Power_Good signal maybe worth checking that out to see what the volts are there because if they go outside t the limits then it is a problem with the PSU. That particular pin is number 8 (grey cable) I usually ground on the mobo fixing screws or one of the blacks I find the screws the easiest to use because of access.
Another thing to try is the resistance between the black lead/s and the fixing screws - should be zero ohms. Oh and by the way don't use an analogue multimeter because they inject volts for their operation you need a digital meter but I am guessing you know this already but thought I had better mention in case. .
Interesting, I'll definitely have to check those. I am an electronic engineer so I understand the bit about the DMM, but I appreciate mentioning it anyway. I know I probably won't be the only person reading this thread. It'll come in useful to someone

Regards


My System SpecsSystem Spec
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25 Jan 2014   #12
derstrom8

Windows 7 Ultimate x64
 
 

Just another followup:

My computer has bluescreened twice in the past week. It gives me the following STOP error:

stop: 0x0000001A (0x0000000000000403, 0xfffff6800003a4c8, 0xafc0000206c5b825, 0xfffff8a010cb64a0)

I did some research and it seems it has something to do with the RAM (as I was guessing). However, the RAM is practically brand new, from the same manufacturer, same model number, etc. I have 4x 4GB sticks. I wouldn't expect them to be incompatible. I'm running the Windows Memory Diagnostic Tool but it is at 90% and has not found anything yet.

I've looked at several links explaining ways of fixing this problem, but so far none of them have helped. Any thoughts? If this is the wrong place to post this, please let me know. I don't know if sevenforums covers RAM issues or not....

Thanks

EDIT: Further information--

The memory diagnostic turned up nothing, so I was probably wrong about the RAM after all. I am looking through the event viewer and have found a couple of errors, both of which saying "\SystemRoot\SysWow64\Drivers\driverx.sys has been blocked from loading due to incompatibility with the system" or simply "This driver has been blocked from loading". This shows up several times. sfc /scannow also turns up dirty, but I'm not sure what to look for in the cbs.log file.
My System SpecsSystem Spec
25 Jan 2014   #13
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

You probably should start a thread in the BSOD forum, as per, Blue Screen of Death (BSOD) Posting Instructions


RAM (memory) test:
This will require memtest on a bootable CD or USB stick.
RAM - Test with Memtest86+
Hello Matt, you might want to start a thread in the BSOD forum, following these instructions.
Blue Screen of Death (BSOD) Posting Instructions


This a more comprehensive RAM test, the w7 can be wrong.
My System SpecsSystem Spec
.

25 Jan 2014   #14
derstrom8

Windows 7 Ultimate x64
 
 

Thank you very much Britton30. I am downloading the SF debug tool now and will post to the BSOD forum.

Regards

EDIT: For future reference, here is the thread I submitted to the BSOD forum:

BSOD appears multiple times per week, STOP: 0x0000001A
My System SpecsSystem Spec
25 Jan 2014   #15
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

You're welcome, you'll get more BSOD specific help there but they are busy and may take time. If you run the RAM test as I suggested let them know that.
My System SpecsSystem Spec
25 Jan 2014   #16
derstrom8

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Britton30 View Post
You're welcome, you'll get more BSOD specific help there but they are busy and may take time. If you run the RAM test as I suggested let them know that.
Hello Britton30,

I am running Memtest86 and oh my, 1000+ Errors in the first 15 minutes! Looks like I'll be at this a while....

Am I correct in the assumption that I should test it with all 4 sticks installed, then test it one stick at a time?

Thanks,
Matt
My System SpecsSystem Spec
25 Jan 2014   #17
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Yes, stop the test if even one error. Then as told, test each stick in each slot to find either a bad slot or RAM module.
My System SpecsSystem Spec
25 Jan 2014   #18
derstrom8

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Britton30 View Post
Yes, stop the test if even one error. Then as told, test each stick in each slot to find either a bad slot or RAM module.
Well I ran a few (fairly brief) tests and found one card that caused the computer to not boot at all. I expect it was the cause of most of the problems (if not all of them).

I installed the three working ones in the proper slots and am running memtest once more, and so far I see no errors. It certainly appears that one card was the problem.

Thanks for the link, it was VERY helpful. I thought I'd run memtest on this computer before, but perhaps that was my laptop. Anyway, many, many thanks! I believe you solved my problem. I will let you know what happens from here.

Regards,
Matt
My System SpecsSystem Spec
25 Jan 2014   #19
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

A sure way is to use only the suspect RAM in each slot and see if it fails.
My System SpecsSystem Spec
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 Desktop PC reboots randomly, sfc errors each time




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