(If you are using windows)Which it seems you are. go get Microsoft MrFixit it is a free little programme and will examine your drive and if it finds a problem it will give various answers for you to try.
Well, that’s my problem.
I have had installed some weird codecs in the past, de-installed them and installed another package of codecs. And for some reason now every time I try to listen to music CDs or I want to play .ogg files or see some movies (movie files: depends which player i choose) my PC gets a blue screen.
Is there a possibility to get rid of the problem without formating C: ;-)