Hello, I've been experiencing problems with my PC for months now. When I try to turn on the computer on, it won't boot, there is no beep sound, monitor remains black, but the computer is working, only the upper green lamp is working while the lower one isn't. Furthermore, I have to shut down the power because nothing else works, computer won't shut down and the buttons aren't working.
Sometimes PC turns on normally, but with time the problem intensified until, a week ago, it wouldn't turn on at all meaning the PC is working I can hear the cooler but apart from that, it's completely dead.
I called a friend who works with computer to check what's wrong, he checked the motherboard, tried to turn it on with another graphic card, but it did not work. Then he thought it's the power supply, he removed it, checked it and returned it, the PC then finally turned on and he saw the voltage values for the motherboard were slightly higher and he thought that's the problem. For some days, the PC worked with old power supply and then I bought the new power supply, it worked for one day and the next the PC again could not turn on (like before). I don't know what else to do, is it possible the motherboard is damaged and new power supply would not help or that's not the problem at all? I really thought power supply was the problem, but now I doubt it.