After a reformat to eliminate some spyware and adwaere that software
solutions wouldn't cure, my computer shuts down frequently.Usually after
initial
boot-up the next time after about 20 sec, then after about 1min, then about
2min, then about 5 min. But today it is shutting down after about 3 min each
time I reboot. The sound is like pulling the power cord, no wind down of
futher noise. Last night it would die 3-4 times but as it warmed up, it
would stay.
Tonight it won't stay more than 3 min and it's gone. Should I suspect power
supply, motherboard, ????