PC turns on but no signal and no light on mouse or keyboard


Thread Starter
Sep 16, 2020
I bought new PSU, new SSD, new RAM, and I had Asrock h110m-dgs with Core i5 6400 from 2017.
When I connect to DVI on MBO and turn PC on, there is no signal and no light on mouse or keyboard.

Sometimes, very rarely, I get it to work, but its pretty random.
Do you think I should buy new motherboard?
Is there some other thing to check?
Whats the greater probability - MBO is faulty, or CPU is faulty? :)
I tries removing powercord and battery from motherboard, it didn't help.

Edit: PC stays on, but no signal and no light on mouse or keyboard

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