Do you remember if your computer would beep once when it started up in the past? Does it beep once when starting now? Do you see the BIOS screen when the machine first starts?
My computer never beeped. The screen doesnt react to my computer. When I turn it On, the screen is still blank. My Case lights turn ON when I turn the computer ON. My motherboard has a button to reset it on itself. that button also turns ON(theres a light) when I turn my PC ON. Hopefully, I find the problem.