Any specific reason for not updating to Service Pack 1?
Start Menu\Programs\Norton AntiVirus Public:Start Menu\Programs\Norton AntiVirus Public
Start Menu\Programs\Norton Identity Safe Public:Start Menu\Programs\Norton Identity Safe Public
Start Menu\Programs\Norton Thiizzle-PC\Thiizzle:Start Menu\Programs\Norton Thiizzle-PC\Thiizzle
Norton is known to cause BSODs, uninstall it and anything related to it.
Recommended antivirus program for Windows 7 based on stability compared to others:-
Run a full scan with both (separately) once downloaded, installed and updated.
Run the System File Checker that scans the of all protected Windows 7
system files and replaces incorrect corrupted, changed/modified, or damaged versions with the correct versions if possible:
Run Disk Check on your hard disk for file system errors and bad sectors on it:
Download and run the System Update Readiness Tool and then download and install all updates including Service Pack 1.
Driver c:\windows\system32\drivers\atikmpag.sys (184.108.40.20610, 299.00 KB (306,176 bytes), 4/20/2011 1:22 AM)
Update to the latest drivers for your graphic card.
Click on the Start
► Control Panel ► Programs ► Uninstall a program ► Uninstall the related stuff
Delete remnants of their drivers using Driver Sweeper
Download the latest drivers from AMD.com or filehippo.com
Keep us posted