G1 gigabyte Sniper B7 wont turn on?

[YeDG]

Hello, Ii have some questions which I am desperate, this is my first gaming pc I assemble, all the connectors are in the right sockets, but when I turn the computer one, one fo the fans starts for few seconds and stops, the mobo gives no life signs and the only one led seen is the graphic card wich indicates is turned on, but the mobo is not responding, power supply 600W is well connected, what I could think it may be wrong connectors on the F-PANEL that won't basically run the mobo at all. Please, if someone can know the reason, please let me know.

This is what actually happens:

https://www.dropbox.com/s/dngcfb2lhyg3u7m/video-1465869050.mp4?dl=0

 

[MCID47]

Did you jump the clear bios jumper ? it's lke the bios clear jumper getting shorted in. Also, check all your power cables, maybe you missed or not plugged in perfectly on the ATX or CPU power connector.