During a recent thunderstorm, I was not using my computer but heard a pop noise. Since I wasn’t using the computer it was in screen saver mode which is a blank screen. I went to the computer shortly after and it had no power. It is connected to a surge protector along with my printer, desk lamp and clock. The computer had no power at all. The printer, desk lamp and clock all worked fine. I first replaced the power cord connecting it directly into the wall power socket. Still wouldn’t turn on. Next, I removed the power supply and took it to a computer repair shop for testing. The technician said it worked perfectly. I reconnected the power supply making sure to secure the connections properly. Still wouldn’t turn on. I did notice that when I reconnected the power supply and flipped the power switch, a green light on the motherboard, beside the 20-pin connector the power supply connects too, turned on. But the fans would not turn on the power supply or the fans used to cool the chip. Can anyone suggest what I should test next or what may be the culprit? I see no indication on the motherboard that it has been fried by a lightning strike. Thank you in advance and thanks for the opportunity to search for help in this forum.