The pc currently has no display. It started off freezing in fortnite, then freezing in windows 7 and now it won't show any display. Tried Reseted the graphics card, changed the graphics card, changed the monitor and cable, reset the cmos and changed the ram. Nothing worked. Also, the cpu fan wavers in a pattern and then restarts that pattern.
Pc Specs
Amd Phenom ii 945( don't exactly remember)
6gb ddr2 ram 4 sticks
Cooler Power 650w power supply
GA-MA785G-UD3H motherboard (unsure)