We find that it's bad mojo not to listen to the owner's suspicions.
I'd suggest running MemTest immediately after waking up (so the system is COLD)
Then also run Prime95 for at least 24 hours (link to it here: Hardware Diags
you can also run FurMark to check your graphics card's memory if you'd like.
SP1 isn't installed, please do the following:
Installing Windows 7 Service Pack 1
1. Visit the PC manufacturer's website and update ALL
drivers. DO NOT
use Windows Update or the "Update drivers" function of Device Manager.
2. Check Device Manager for any unknown/disabled devices - if there are unknown/disabled devices, fix them with the latest drivers from the device manufacturer's website (not the PC Manufacturer)
3. Visit Windows Update and get all updates
4. Visit Windows Update and get Service Pack 1 (usually under Important Updates). Read these notes for installing SP1: Steps to follow before you install Windows 7 SP1 and Windows Server 2008 R2 SP1 from the Microsoft Download Center
5. Visit Windows Update and get any other available updates
Then, remove all custom settings/overclocks and see if the system remains stable that way (in case it's the overclock causing the problem). Even if the overclock has been stable for a while, it's possible that it's damaged something in the system and that it may be causing problems. The only way to tell (with an overclock) is to return the system to default values and checking for stability without the overclock.
Are you using a USB keyboard? If so, it's safe to ignore the error about the PS2 keyboard in the perfmon report
Please visit the PC manufacturer's website and download/install the chipset drivers for your system. The USB controller drivers are missing, and this may be fixed by updating the chipset drivers.
MSI Afterburner (components are also a part of RivaTuner/EVGA Precision) are known to cause BSOD's on Windows 7 systems. Please uninstall it immediately.
Running memory dumps from Nov 2011 to present.....