I have Asrock P43DE3 with 800w power and 2x 4g 1333 and 1x 2g 1333 ddr3 ram. I was checking errors with the memtest86+ when the proces stoped and then i restarted my pc. After this wont post i put the stick in the slot wasnt used during the first try and do a ram test with the same program and frozen again. The ram is not the issue becouse i tried in other computers. It now frocen at 477184 errors and 6 min 12s of test. The ram i puted in the 2nd test is 1x 4g.