I have problem with boot on this motherboard, it gave me red CPU LED when are installed two memory modules in blue slots, nothing on Q-Code is showing, when I leave one module in A2 I have red RAM LED and Q-Code 30, when I hit MEM OK its start blinking, restart computer several times and still nothing happen.

Memory are G.Skill Ripjaws 2x2gb F3-12800CL7D-4GBRH compatible with this m/b they are on Asus QVL list and they are ok on 100%, I tried reinstall with no luck.

Tried clear CMOS on rear backplate button, nothing helped.
I remove cpu and checked socket pins on m/b all are good, but still have this problem

8pin connector is connected

CPU; 2600k - brand new
MEM; G.Skill Ripjaws 2x2gb F3-12800CL7D-4GBRH - 100% fine from my previous setup
GPU: EVGA GTX 280 - 100% fine from my previous setup
PSU: Corsair HX620W - 100% fine from my previous setup

Please help