Different BSOD at each reboot, Random crash time

[BlueSOD]

Been Experiencing this for 3 months now. I attached the dump files of each crash below

 

[x BlueRobot]

[COLOR="Red"]BugCheck C1[/COLOR], {[COLOR="SeaGreen"]b9726f68[/COLOR], b9726b40, cd0094, 23}

Probably caused by : [COLOR="Red"]memory_corruption[/COLOR] ( nt!MiCheckSpecialPoolSlop+6e )

The specifics of this bugcheck can be found on my blog here - BSODTutorials: Debugging Stop 0xC1 - Sloppy Bytes and Special Pool

Okay, the dump file doesn't reveal a faulty driver, however, a driver has caused some form of memory corruption. The later dump file revealed Avast as the last running process, this doesn't essentially mean that Avast is causing problems, but it could be a indication since I've seen Avast frequently cause problems in the past.

I'll recommend the removal of avast with avast! Removal Tool, at least for testing purposes.

Install and perform full scans with:

• Malwarebytes : Free anti-malware download
• Microsoft Security Essentials | Protect against viruses, spyware, and other malware

   Information

Remember to install the free version of Malwarebytes not the free trail; untick the free trial box during installation. MSE is the most lightweight and compatible with the Windows 7 operating system

You can also view this thread for a complete free and lightweight security protection combination:

• http://www.sevenforums.com/system-security/206705-good-free-system-security-combination.html

The dump file doesn't reveal much information at all unfortunately, the memory contents seem to be pretty corrupt, since most the useful extensions don't work.

1: kd> [COLOR="SeaGreen"].trap 96bead34[/COLOR]
ErrCode =[COLOR="SeaGreen"][COLOR="Red"] 00000000[/COLOR][/COLOR]
eax=00000000 ebx=00000000 ecx=00000000 edx=0000b798 esi=0472f91c edi=0472f924
eip=77ca70f4 esp=0472f8a8 ebp=0472f8d4 iopl=0         nv up ei ng nz ac pe cy
cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00000297
001b:77ca70f4 ??              ???

The trap frame indicates a divide error, which is another sign of drivers being problematic.