Hello, my computer was running completely fine for around 3 years. Yesterday out of a sudden (nothing changed) I had trouble to turn it on, all fans started to spin for 1 second, then stopped, and the pc restarted - infinite loop. I turned it off, unplugged the power cord, let it rest for 10 min, tried again, and eventually after 5 resets it managed to turn on and I had no trouble with it for the rest of the day. However, I tried to turn it on again today - no success at all. I cleaned up everything inside from dust, unplugged all cords from the PSU, plugged back in - still the same.
Now it gets interesting - I put my RAM into a different slot and the PC turned on for about 30 seconds - then turned off (no beeps), turned back on and seems to be running fine (all fans spinning, hardware looks just fine) - but I can't get any signal to the monitor and pressing num lock on my keyboard doesn't do anything (it normally turns on the LED on - that's how I know it booted up successfully). The RAM works fine in all 3 slots except the one I've been using for 3 years.
I also tried unplugging the power cord and holding the power button for 1 minute - nothing has changed.
Do you have any ideas what part could be faulty? motherboard or PSU?
Thank you very much.
Now it gets interesting - I put my RAM into a different slot and the PC turned on for about 30 seconds - then turned off (no beeps), turned back on and seems to be running fine (all fans spinning, hardware looks just fine) - but I can't get any signal to the monitor and pressing num lock on my keyboard doesn't do anything (it normally turns on the LED on - that's how I know it booted up successfully). The RAM works fine in all 3 slots except the one I've been using for 3 years.
I also tried unplugging the power cord and holding the power button for 1 minute - nothing has changed.
Do you have any ideas what part could be faulty? motherboard or PSU?
Thank you very much.