First I thought it was just when I tried to play a video file - Media Player crashes instantly and locks up the computer.
Now when I try and even open a folder to play music, which was working before, XP does the same thing.
I get a message saying Windows has encountered an error and needs to close and then Dr Watson PostMortem Debugger has encountered an error and needs to close.
Then the computer freezes entirely and I have to force a reboot.
The computer is working fine while I'm using internet however, and I can stream audio and video with no problem.
I have no idea what the problem is and what I can do to fix it.
Any help is appreciated.