Hi there,
I have an HP desktop PC which have a weird problem and I want your help. The PSU on its back have a green led which turns on when connected on the mains. When connected on the Mobo with the 24 pin it keeps blinking. When i remove the 24pin the light stays on. I disassembled everything off the Mobo, CPU ram GPU hard drives etc and i kept only the motherboard and the PSU. If I jump the green and black fans starts spinning and checking with a voltmeter i get all readings of 5v and 12v ok. When I connect the 24pin only on the Mobo PSU green light that indicates it's connected to main turns off instantly and trying to restart and keeps blinking on and off giving no voltage to the motherboard. I checked for shorts on positive and ground on PSU on the 24 pin and nothing. Checked on the motherboard's 24 pin still nothing. What could cause this to happen. Is it the PSU or the Mobo. If it's the Mobo which is a short where should I check for shorts? Could it be the super I/O? Thanks in advance.
I have an HP desktop PC which have a weird problem and I want your help. The PSU on its back have a green led which turns on when connected on the mains. When connected on the Mobo with the 24 pin it keeps blinking. When i remove the 24pin the light stays on. I disassembled everything off the Mobo, CPU ram GPU hard drives etc and i kept only the motherboard and the PSU. If I jump the green and black fans starts spinning and checking with a voltmeter i get all readings of 5v and 12v ok. When I connect the 24pin only on the Mobo PSU green light that indicates it's connected to main turns off instantly and trying to restart and keeps blinking on and off giving no voltage to the motherboard. I checked for shorts on positive and ground on PSU on the 24 pin and nothing. Checked on the motherboard's 24 pin still nothing. What could cause this to happen. Is it the PSU or the Mobo. If it's the Mobo which is a short where should I check for shorts? Could it be the super I/O? Thanks in advance.