PC keeps blue screening many different codes win 7

[Galdorf]

Did virus scan via boot cds, as well as malware scans found nothing.
Re-applied thermal paste and did temps check OK.
Ran Memtest86 overnight no errors.
Did SFC no errors.
did chkdsk no errors.
did bios update.
did driver updates.

Errors are: c5, 1000007e, 0a, 1a, 50, 3b, 7e, 18, de
does not blue screen in my shop no matter how much stress i put on it.
any ideas what could causing this?

 

[Markverhyden]

Power.

 

[phaZed]

I second PSU.

 

[nlinecomputers]

Power, memory, Hard Drive, CPU. In that order.

 

[GTP]

Anything plugged into it when it BSOD's like a printer, USB key/drive, etc?
Try a different mouse/keyboard?
My wifes laptop would BSOD when she plugged in a USB key. I found that the pins in the port were slightly bent but touched when the key was inserted.

 

[TechLady]

I would breadboard it and run it with different PSU and see if anything changes.

 

[Diggs]

I know it passed its memory test, but most BSODs are memory related. Are there multiple sticks of memory? If so - run on just one stick for awhile.

 

[Galdorf]

If it was hardware it would blue screen in my shop after stress testing it only other thing that leaves is power at his house and something he is plugging in strange thing is system files are at fault like usb.sys but if they were corrupt sfc should have showed something.
Only thing that he changed was new gaming mouse and keyboard from Logitech maybe the software/drivers are causing this the Logitech drivers were also in the fault stack.

 

[Pixelated Tech]

Power.

Yup. Get that bad boy on a UPS.

 

[NETWizz]

Power, memory, Hard Drive, CPU. In that order.

I do not disagree with the order, but I would insert motherboard in the order here:

Power, Motherboard, Memory, Hard Drive, CPU


I would probably delete the CPU entirely. Those really don't go bad unless they overheat, get smashed pins, etc.


Now if you were on location, I would check a few things. I would check the voltage between hot and neutral is around 120v, and second I would check for floating neutral. Specifically I would put one lead in neutral (the wide blade) and one in ground (the round bottom) should be 0v.

Between the two blades there should be 120v, between. Between hot (skinny blade) and ground there should also be 120v.

 

[GTP]

Anything plugged into it when it BSOD's like a printer, USB key/drive, etc?
Try a different mouse/keyboard?

usb.sys but if they were corrupt sfc should have showed something.
Only thing that he changed was new gaming mouse and keyboard from Logitech maybe the software/drivers are causing this the Logitech drivers were also in the fault stack.

This is where I would be looking. I've had this before where the BIOS's/Chipsets in the KB and Mouse have been "dodgy" and causing BSOD in Windows.