PC shuts down, won't boot

HaywardMac

Reputable
Jul 13, 2014
2
0
4,510
My old PC I use for CNC randomly shuts down, and won't power up again until I disconnect it from the power grid. Also, in the failed state the power LED flashes once every 3 or 4 seconds.

I replaced the m'board battery, no luck. Any ideas?