Could a router kill my motherboard
I have a pc build with a Gigabyte Eagle AX B650.
Other specs:
(ryzen 5 7600X, RTX 3080, 32GB corsair ram, seasonic 850W PSU)
In the middle of the storm while THE PC WAS OFF AND UNPLUGED FROM the outlet, my internet cut out. I went to check the modem and after restarting when the weather calmed, it started to work again but the ethernet ports are dead. 3/4 don't show any life and the 4th shows two constant leds but no trafic. Leds are on even if nothing is connected on that port.
The modem is cooked but I went to see internet status on the PC (to check what is happening on the other side since the WIFI is working), I plugged my computer back to the wall, turned it on and smelled the "electronics burning" smell that I recognized from burning electronics in projects.
The computer fans spin, all leds (case fans, AIO, graphics card, USB RGB hub and RAM) light up but it does not boot and diagnostic lights show up as following: first the DRAM led for some time, than VGA for some time, than quick CPU and back to DRAM, than at the end it goes to VGA and stays like that.
Monitor detects the source but only that, it stays black. My phone shows "Can't connect to DESKTOP-XXXXXX" for the bluetooth. I removed the GPU (since VGA was lit) and identified that the burnet smell was on one part of the graphics card. I pluged HDMI to motherboard video (procesor has integrated graphics) and exaclty the same symptoms happen.
I have tested the voltage on the PSU and that is all normal.
My connection is that PC and modem died, and PC was not in the wall. Eather I am extremly unlucky or could the modem be the cause for the damages?
What are your toughts, suggestions?