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Windows 7: Seemingly Random BSOD. STOP ERROR: 0xA, 0x7E, 0x124 mostly.

11 Jul 2012   #11
Vir Gnarus

Microsoft Community Contributor Award Recipient

Windows 7 64-bit
 
 

The custom laptop Sager makes probably uses a motherboard that makes use of a desktop-grade chipset. There's also the possibility that the chipset driver suite you found pertains to all related chipsets, be it mobile or otherwise. It's hard to determine without actually figuring the exact model. I guess it's a Clevo x8100. Can't really tell from what's given (Hwinfo may figure it out). I'm sure the specs for your laptop will tell you.

As for using Windbg, I took the second argument of the bugcheck and fed it to the !errrec command (that's 3 'r's). The second arg for the bugcheck is the address of the WHEA_ERROR_RECORD data structure that contains all the relevant info. The !errrec command just displays it all in a readable format. One can also decipher the gist of it just by looking at Arg3/Arg4 of the bugcheck and whipping out the Intel developer manual (free download) and looking up the MCi_STATUS bit flags they're associated with, but it's a legacy way of doing things and obviously more difficult. Good for when system fails to generate crashdumps, though.

I learned all this just from pretty much scouring the internet for information on kernel debugging for over a year. I got a lot of resources I saved up in the link in my signature, plus my own personal noteworthy experiences. Understand I'm still an amateur; I cannot guarantee the info I provide is accurate.


My System SpecsSystem Spec
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11 Jul 2012   #12
diamondwolf

Windows 7 Ultimate x64
 
 

Yes its a Clevo X8100. Might check out HWInfo and see what it reports and update the chipset drivers based off of that, as I thought the same about maybe it uses a desktop grade chipset, so I was kind of hesitant to just pick one and install. Matter of fact right now I have just installed drivers from the CD, albeit they are older I do know they work for one. Last time everything went into a catastrophe after trying to install Windows updates, and went to a blue screen towards the end of them. So far however, I have installed most of them and only have a few minor ones left, plus the SP1 update. But most importantly, no BSOD's at all!

Thanks for the info on this. I love looking into new things and learning more about computers. I guess since you learned by scouring the internet you're the same way. Will definitely try to find some examples online and check out the developer manual plus the link in your sig.

Thanks again for the help man, I'll post back if I get any BSODs or even if I dont in case someone else has/is having this issue and they find this post.
My System SpecsSystem Spec
13 Jul 2012   #13
diamondwolf

Windows 7 Ultimate x64
 
 

Today all seemed fine however while I was playing SWTOR the computer completely locked up. It did the same thing yesterday when installing Windows Updates and went through a phase where every reboot and option lead to a 0xA blue screen. Then finally it decided to let me into start up repair once, and worked ever since.

I went to bed woke up this morning, turned it on and it booted up fine. Except for the lock up while playing a game. Since then it went back into its phase of STOP ERROR on every boot up option, once again mostly 0xA and it threw in the old 0x124 I havent seen in a while. Along with a couple 0x3D's. Would the random reboots earlier in the week + system lock ups = CPU? Or could it be any of the Trio of Trouble as you put it?

I've read up on Ultimate Boot CD and it seems it has some bootable CPU test on it as well. I also found that Intel has a bootable Intel(R) Processor Diagnostic tool somewhere around. They only list the .exe on their site and say to contact your local Intel tech support for a bootable copy... which... seems really dumb, lol.

Just wondering if this supports your conclusion and if those tools would help pinpoint the problem to the CPU or if you think it could still be the other 2 of the trio.
My System SpecsSystem Spec
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13 Jul 2012   #14
diamondwolf

Windows 7 Ultimate x64
 
 

Disregard. This post was related to Prime 95 testing through Ultimate Boot CD but I forgot to check and see how to run/what is reported after the other 2/3 test.
My System SpecsSystem Spec
30 Jul 2012   #15
diamondwolf

Windows 7 Ultimate x64
 
 

I will add this in incase anyone else comes across the issue. As I hate topics like this that dont have what fixed the issue at the end, and the OP never follows up.

So after taking Vir's advice, I booted my computer a few times and let it blue screen. I always got the PROCESSOR CACHE error towards the bottom, and it was always bank 0 proc 2, whatever that means. I ordered the same CPU model off of eBay, and got it later than I had hoped last week.

Wednesday, I swapped the new CPU I had gotten, with the one in the laptop. Replaced the thermal compound. Ever since then it has not BSOD'ed for at all. Reinstalled Windows just to make sure there would be no drivers in the background messing it up. Nice clean install, got through all the updates, still without a STOP ERROR code. Since then from early that evening Wednesday, all the way till now (Monday), no STOP ERRORs.

So it turns out it was a bad CPU. It sucks, but the issue is resolved, and I'm happy. Thanks for all of your help Vir, along with answering my questions in PM's. Take care man.
My System SpecsSystem Spec
30 Jul 2012   #16
Vir Gnarus

Microsoft Community Contributor Award Recipient

Windows 7 64-bit
 
 

Thanks a mil on the update man. Once I laid eyes on some of your crashdumps, especially with the odd register behavior and the WHEA errors reporting L0 cache failures, I had to venture to guess your CPU was prime suspect here. Of course, motherboard - and especially PSU - issues can manifest these as well, but it was very consistently CPU-related, so I had a feeling yer CPU bugged out.

Glad to hear you went ahead and swapped the CPU and that was all you needed done. Have fun with yer laptop, mate!
My System SpecsSystem Spec
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 Seemingly Random BSOD. STOP ERROR: 0xA, 0x7E, 0x124 mostly.




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