OK Iam running XP P4 512. So here's the problem every time I open my media player after maybe 30min to an hour the computer shuts off just like that no warning . Now I recently installed a TV tuner card by MSI
Iam saying to my self oh maybe its a power lost of some kind but I can leave the computer running for days and its doesnt shut off with no other programs it only happens with the media player! Oh I have no other programs running.

PLEASE ANY SUGGESTIONS ?
Other than pulling out the TV card?