AsRock H55m-LE Won't Boot Up With 2x4G DDR Sticks

I just got a brand new mobo, AsRock h55M-LE. I got KHX1600C9D3K2/8GX (2x4GB) 1600MHz DDR3 CL9 XMP memory sticks. When I try to boot up with one stick which is in slot DDR-B, the comp works. If I put another stick in DDR-A, comp boots up for 5-7 seconds and reboots. I use only one stick in DDR-A it's gonna be same error. So atm only DDR-B with one stick works.I tried to change timings and voltage in BIOS and result was this:9-9-9-27, dram volt 1,65, vtt auto and both sticks in boots up for 5-7 secs and reboots (there's no pic in monitor etc)9-9-9-27, dram volt 1,65, vtt auto and one stick in everything works.9-9-9-25, dram volt 1.5, vtt auto and two sticks in comp boots and stays on but there is no pic in monitor or any light on keyboard etc..9-9-9-25, dram volt 1.5, vtt auto and one stick in everything works. And also tried to change dram frequence but it's the same with all.I have tried both sticks and they both work.