Power LED on motherboard doesn't light up, followed sticked thread first

jacklusted

Reputable
Sep 6, 2014
2
0
4,510
Hi.

Putting together a new build PC (first for 5 years) and running into a problem i've never had before. No matter what combination of components, and I've tried with an old power supply I know works, the power LED on the motherboard never comes on.

I've double and triple checked it's plugged in and turned on at the wall and the power supply.

Any ideas?

Specs are:
Asus Z-97K motherboard.
Intel i5 4690K
16GB DDR3 RAM
Corsair 760W modular power supply (also tested with an older 650).
256GB sandiskx300 SSD
Toshiba 1TB hard drive.
Samsung DVD drive.

Combinations tried (attatched to the motherboard).
- All components plugged in
- Only CPU and power supply plugged in
- Only power supply plugged in
- Older working power supply only

Help!