I'm using Bitdefender Internet Security 2013.
As part of an effort to solve some chronic driver problems, it's been recommended that I try the "sfc.exe /scannow" procedure. That involves inserting my XP installer DVD when prompted. Each time I try to, Bitdefender insists on trying scan it. I can eventually kill that response, but by then, it has disrupted the procedure and scannow asks me to start all over. Tried everything I could think of to turn off Bitdefender functions and processes. No luck. Suggestions?