I was updating my brother’s PC with the latest AV updates and Windows Updates, when after several reboots, it went powerless. No sign of any power to the motherboard at all.
First, I replaced the Power Supply. The fan worked on the PS, but no lights on the System Board. I assumed it had gotten a power surge and burned the board too.
Second, I replaced the System Board and reconnected all the components. Still no power. I do have lights on the motherboard, but the fan on the new power supply is not running.
Third, I disconnected the devices one at a time attempting a start up with each one, but no change in the status.
Fourth, I took the Power Supply out of that box and tried it in another PC and it works fine.
Fifth, I removed a Power Supply that I knew was working on the other machine and connected it, but still no signs of power at all except for the light on the system board.
Sixth, I took the board out of the box and placed it on a piece of cardboard to prevent any shorts or feedback and connected the power supply, but no response.
I have run out of ideas. Does anyone have any suggestions??????
Please!!!!!