I upgraded my old LGA775/Pentium E2160 to the ASRock H61M-DGS, Intel Pentium G860, and Pareema 2x2GB DDR3 1333 RAM. When a stick of RAM is in slot A, there is no video output, and the computer reboots itself every 10 seconds. The problem does not persist when there's only a stick of RAM in slot B. I updated all the drivers and BIOS, but I still have the issue. I tested the RAM in another computer, and it worked just fine. Could my RAM slot be defective?