Most likely your problem. My machine started the same business. I tried everything known to man. Even went thru a couple of soundcards. Finally bit the bullet last night and formatted. Reloaded software tonight, not a CTD yet. I usually reload windows once a year fer one reason or another. It's like having a big garage cleaning fer me. I pick up so much crap on my PC, from my kids free CD games that come in cereal (LOL!) to 8-10 megabytes of AH screenshots. i'm tired, rambling, check your IRQ's be sure nothings conflicting, be sure you have a good sound card, and consider a format/reload.