I never got the BSOD but my game has been crashing recently...
I just thought I dowloaded something fodgey, turns out everytime I exited my game from a crash Avira AntiVirus was scanning my pc, didn't notice until now.
The internet thing, I have a wireless router so I'll just turn the program off, or get my mam to turn of the router entirely.
No matter how annoying my Anti Virus is, I have another program I use to get rid of Hackers/Spyware/Virus/Wasted Space in emergencies. Advanced Windows Care V2. Gets rid of everything, even if you allready have it. That program saved me of 2 virus', 19 spyware and more than a GB wasted space. It's awesome.