I think I have a refurbish desktop computer since it has no labels or names on it. But the motherboard is a Gigabyte GA-H61M-S2PV. Now when I switch on the computer, fan spins, lights on power/reset button comes on, everything looks normal but the screen displays "No Signal". During startup, a long continuous sound comes on after 3 beeps. Does not stop until i switch off.
RAM: 8Gb, Windows 7 Home Premium.
Anything else please let me know so i can provide.