Start Menu\Programs\PC Tools Registry Mechanic Public:Start Menu\Programs\PC Tools Registry Mechanic Public
Start Menu\Programs\PC Tools Security Public:Start Menu\Programs\PC Tools Security Public
Crashes indicate Pc tools being a possible cause. Remove Pc tools and replace with Microsoft Security Essentials to see if it provides more stability. Uninstallers (removal tools) for common antivirus software - ESET Knowledgebase
If there is no uninstaller listed, remove it with Revo Free: Revo Uninstaller
Download and install Revo Uninstaller free from here: Download Revo Uninstaller Freeware - Free and Full Download - Uninstall software, remove programs, solve uninstall problems
Opt for "Advanced Mode" and uninstall the software (also delete the leftover registry entries).
Microsoft Security Essentials and Malwarebytes, both recommended from a strict BSOD perspective. Microsoft Security Essentials, Free antivirus for windows
Malwarebytes Anti-Malware Free
DO NOT start the free trial of MalwareBytes. Deselect the option when prompted.
Scan your system with the following:
Kaspersky TDSSKiller - How to remove malware belonging to the family Rootkit.Win32.TDSS (aka Tidserv, TDSServ, Alureon)
ESET online scanner - One-time virus scanner free with ESET online scanner
Please run these tests and report back the results
1. SFC /scannow to check windows for corruption - SFC /SCANNOW Command - System File Checker
2. Disk check for errors on the hard drive - Disk Check
3. Troubleshoot applications by a clean boot - Troubleshoot Application Conflicts by Performing a Clean Startup
4. Memtest86+ paying close attention to part 3 - RAM - Test with Memtest86+
5. Hard drive test from HDD mfg website - Hard Drive Diagnostic Procedure
Check for a BIOS update from the Intel website:
BIOS Version/Date Intel Corp. PRG3110H.86A.0047.2008.0227.1745, 2/27/2008
Hope this helps for now.