VGA LED and beeps

DanielCNP5

Distinguished
Jan 1, 2012
20
0
18,510
I'm having 1 long beep and 3 short beeps with VGA red LED on.

I started having a black screen and these beeps after the normal beep. The issue remains even with the GPU unplugged. I have no signal from any video port to be honest. Tried both GPU ports and motherboard's vga port and no image. Tried CMOS reset via jumper and battery and nothing. It seems PC doesn't even boot, as only pressing quickly the power button PC goes off immediately.