My computer would not turn on, fans, lights, wires, are all perfectly fine, but the monitor would display no signal, and the mouse works but the keyboard doesn't, I also tried all the sub plug in for the keyboard, but it just doesn't work. I tried the solution where you remove ram, cmo for a few minutes, didn't work for me. I've also tried removing power cord and pressing the on button for a minute, still doesn't work.
-My monitor doesn't display and says no signal and would enter power saving mode. The vga wire is perfectly fine
-The mouse is working, but the keyboard doesn't work, I've tried the keyboard on other devices, and it works fine, but doesn't know why it doesn't light up on PC