machan most of da time it could have been the problem in RAM,
remove da ram and clean it and reinstall it...
if it dosen't work, i think it can be a memory dump....
try reseting the factory defaults for BIOS
if it disen't work,,,
i thnk u have to farmat ur machine... because this can be virus infection too.....
if this didn't work out tooo,
then it might be a problem in the hard drive,
( my friend had dat problem too.. it's becaus of the IDE cable. when he changed it to a new one problem was gone.. )
hema welema hdd cable eka galawanakoto eke thiyena hill tikak loku wenawa ethakoto samahara welawata ohoma restart wenawa/stuck wenawa.....
gud luck
