Chosen Solution
I believe my house was struck a few nights ago - zapped AC control board, TV, and a few power adapters. PC not responding at all (was plugged into surge protector for initial strike, and completely unplugged immediately after) I’ve tried replacing the PSU, but it didn’t help. I’ve read that the PSU fan should spin when turned on, but I’m not sure that’s completely accurate. Not sure what troubleshooting steps are next. Can anyone give me a step-by-step run down? Intel i7-11700 cpu AsRock B560M Pro4 mobo Crucial Balistix 3200 memory EVGA 10-BQ-0600-K1 psu WD SN750 NVME m.2 ssd Sapphire Nitro RX 480 gpu
Hi @jeffthewhiteguy Did you try connecting the PC directly to a wall power outlet and not through the surge protector, in case the protector is of the sacrificial type i.e. only works for one power surge event and now doesn’t work, you never said? You could try the paperclip test on the original PSU to check if it turns on and if all its voltage outputs are OK but since you tried a different PSU this only proves whether the original PSU is OK or not. Was the PC turned on at the time of the lightning strike? If so you may have two problems i.e. faulty PSU and faulty motherboard. If the PC was on and the original PSU tests faulty using the paperclip test then most probably the motherboard (power mosfets?) may have also been damaged by the surge and that is why the replacement known working PSU now also doesn’t work with the motherboard. What is the model number of the motherboard as printed on the board itself? I can’t find a schematic using the model name but sometimes the number from the board (if different) gets results. If the motherboard and PSU are both faulty maybe check your household contents insurance policy to see if storm damage of this nature to electronic/electrical devices is covered by the policy. Just a thought Update (05/12/2022) @jeffthewhiteguy It won’t boot without a CPU, but you should get some indications that it should be starting and that there is power on the motherboard Try connecting a system speaker to the motherboard header pins (see p.20 of the user manual) Here’s an image of the Asrock beep error codes that may help. Although if the PSU is not turning on I don’t think that you’ll get any.
(click on image to enlarge) Something’s is obviously wrong on the motherboard and without a schematic it will be hard to find. A motherboard diagnostic card may also help but it also relies on power from the motherboard
The motherboard may be in a protected state, similar to if your laptop falls. You could try removing a stick of ram and try to power it on. If that doesn’t work, try removing the bios battery for 1minute, connect it again and try to power the system on. You have probably tried this but it could also be the fuse is blown in the plug for the pc, you could try another cable and also try powering it on directly into the wall and not through the surge protector.
