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Avira is known to cause BSODs on some systems, please uninstall it.
Code:
Start Menu\Programs\Avira Public:Start Menu\Programs\Avira Public
Start Menu\Programs\Avira\Avira Desktop Public:Start Menu\Programs\Avira\Avira Desktop Public
DAEMON Tools Lite "c:\program files\daemon tools lite\dtlite.exe" -autorun WALKER\Presario HKU\S-1-5-21-3527483958-861926469-1139164370-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Use MSE, it does not cause problems on the windows 7 OS. It's free+light weight as well.
Daemon tools is known to cause BSOD. Please uninstall it.
Reinstall the latest drivers for your graphic card from the manufacturers website but first uninstall via control panel. Use
Driver Sweeper to get rid of any remaining drivers and avoid CCC - Catalyst control center during installation.
Keep us posted