that typically is a PSU overheated or with some other problem, they take the longest time to reset after cooling off, much longer than an over heated CPU would.
For quite some time my computer has been freezing regularly. It seems to happen at random. I can be playing a highly demanding game or be on my desktop, no applications running. When it freezes every external port is disconnected. The monitors display the last image on-screen whilst keyboard etc. stop working. If I shut off my computer and try to start it again the monitors do not receive any signal. It stays like this for a while but when I come back after a few hours/days it turns back on.
Sometimes it works for days before freezing, other times only minutes.
I tried buying and installing a new PSU but now the monitors do not receive signal what so ever.
What could be the problem?