I have a workstation that have had a problem with its VGA card or monitor cable for 8 months, until recently I got a new VGA card to replace but still I had a problem with it shutting down automatically.
I ordered a monitor cable to the main board and replaced it and the PC started working for longer times (Yesterday 1 and half hour) and then it suddenly shutdown.
I tried removing hard disks, removing 1 ram piece and tried removing the keyboard, lights led ..etc the machine after lasting for an hour and half it started shutting down in less than 5 minutes then.
I am out of options on how to diagnose this machine. is there anywhere to possibly know whats the reason for the shutdown?
The processor's heat is around 30-60C and the GPU is about 60-70C.
Could this be the main board damaged? Is there anywhere I could make sure 100% what it is?