I had just recently built a computer with a asrock Z87 PRO3 motherboard intel i5 4670k processor a EVGA gefore gtx 660 graphics card and when ever i start it the monitor says no connection. I had recently had DRAM that didnt work and i bought some new DRAM and it is corsair vengeance 2 sticks of 8 and it said on the asrock website it was compatible. i have tried taking the battery out of the motherboard and checking all the connections and they are fine. I did plug in the 8 pin cable near the processor. If you could help me that would be greatly appreciated.