BSOD when scanning my system..

[Shade]

Everytime I try to scan my system for virus I get blue screen of death.
I've tried with several different anti virus programs, ad-awares and online virus scans now... And it seems like I have something, somewhere in my system that doesn't want to be found.
The BSOD happens randomly when I'm scanning so it's not specified to one folder.
For example one time it crashed when my virus program got to C:\Programs Files\Lenovo\SystemUpdate

I've tried to clean out my MBR to make sure there wasn't anything there that is causing the problem..

Also... When I defragment my harddrive I also get BSOD.. So SOMETHING doesn't want to be touched..

And I'm out of ideas now...

Anyone..?

[stkris]

Smells like a bad HD to me.

I'd take a backup ASAP then run a HD test app. Sorry I do not know one particular.