I just built my new PC and it will not power on at all. I get one LED lighting up on the Motherboard but no fans or lights anywhere else. I have tried a different front panel switch to no avail. My current build is
Asus P8Z77-VLK Nvidia gforce 670 GTX 16 gb Kingston Hyperx Intel i5-3570k Thermaltake Black Widow 850W Antec 900 case
Please let me know if anyone can help or if you need any extra information
More aboutasus p8z77
Read the manual
that LED is telling you something
Check the voltages on the main motherboard connector and also on the CPU power connector to make sure power supply is working properly. Make sure you use a digital volt meter.