I was told it was my PSU in the beginning, but this is my third one. The first two I sent back. No, the graphics card is not integrated. I just downloaded and installed the latest drivers for everything including all my USB devices, no luck. And I don't have a creative joystick.

The only original parts not returned, replaced or have since died are my CPU, MB, graphics card, & sound card. (should have probably mentioned that in the beginning)

I really appreciate your help with this, but if the best option is to throw in the towel finally and replace either my MB, graphics cards or (if there is no other option) both, I'll do it. As I said before I finally have enough money and free time to do this. I guess my question is now which one is most likely the culprit?