March 8th, 2010, 07:30 AM
PC won't boot, only motherboard lead light on
I am rebuilding an old PC. When trying to boot the first time the motherboard onboard power led lights up and nothing else happens.
The power supply fan doesn't start
The CPU fan doesn't start
The chassi fan doesn't start
No reaction from the screen
No reaction from the mouse
No reaction from the keyvoard
My setup is:
Motherboard: ASUS M4A785TD-V EVO, Socket-AM3
CPU: AMD Phenom II X4 945
Memory: 2 matched pairs Corsair XMS 4096MB DDR3 PC3-10666 1333MHz (9-9-9-24) (2x2048MB) (TW3X4G1333C9)
Power: 500W Seasonic nätdel, ATX, EPS12V, BTX *
Disk: Western Digital Caviar Green 1TB (IntelliPower / 64MB Cache / SATA II / NCQ)
I have done the following checks:
Tested the powers supply
I measured all output with a voltage meter and they are OK.
Turned onboard battery upside down (recommended by Asus)
Removed all connections to disks and dvd
Still no effect. Only the onboard power lights lights up.
March 8th, 2010, 10:43 AM
After turning onboard battery upside down, I replaced it with the original polarity
Originally Posted by Botul
March 14th, 2010, 06:00 PM
Have you connected your ATX connectors properly? Some motherboards use all 24 pins inside of 20 why it might be lacking from power. Also did you make sure your Power SW, RESET SW, Power Led etc are connected in their right pin?