New PC homebuilt. no post, no beep, no display, no usb, fans working

I just put together my new PC and it will not POST, no beeps, no display, and the usb ports do not work. My cdrom will open and close, all fans and lights work properly. Even the cpu fan which is connected directly to the mobo.

Specs:
CASE GIGABYTE| GZ-F5HEB
MB ASROCK|970 EXTREME3 970 AM3+

PSU RAIDMAX | RX-700AC 700W RT

CPU AMD|FX8350 AM3+ 4.0G
SSD 240G|INTEL SSDSC2CT240A3K5

MEM 8Gx2|GSKILL F3-1600C9Q-32GSR
MS WIN 7 HOME SP1 64BIT 1PK - OEM


Some noteable things during.installation:

Plugged the pcie 6+2 into my mobos 8pin 12v and booted up on accident.
My ram is 1600 which is by default an.overclock for my mobo


I have a lot of fiddling to do when i get home from work, wondering if anyone can give me a clue as to what this might be.. and where i can start.


As much info as possible would be greatly appreciated. Paypal donation to anyone who puts me on the right track.

Thanks much!
2 answers Last reply
More about homebuilt post beep display fans working
  1. What video card are you using? make sure its snug in its slot and any additional pcie power cords to it are connected.
  2. the memory will auto clock down to the mobo, not vice versa

    disconnect everything u can, and see if if posts that means, hard drive, cd drive, and one dimm

    if it still won't post, try a different video card
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