Have had similar problem on several occassions, for different reasons. Most have been hardware faults (motherboard / RAM /processor). I have also had the problem with the CPU simply running slightly hot, so first plan would be to look at the CPU temperature. If it is anything over about 50c, then upgrade the fan. If not, then I would suggest the crash in ME was caused by faulty hardware, in which case you will need to sort that out first. Have you tried installing ME back on the system to see if that works?