playback not working properly

[carl micro]

i made a song in khpro then i thought i would try it out so i tried to playback in micro it played for about 25 secs then micro shutdown weird i thought i have been useing micro and khpro
for a couple of years now without many probs

this was happening before i installed a new vid card hence the new vid card old one was 8meg new one 64 mg nvidia geforce 4
agp im using xp pro micro 2315 khpro duron 1.3 gig /384 ram
ive tried the usual nocking back the hardware accelerator
to no avail please help