Thanks for responding so quickly. when I went to look for a bios upgrade on the asus website the only M4A77TD board is pro and it looks a lot different than mine. When i tried the system scan thing like you suggested sfc /scannow, it froze at 15%
, will try again. Also i forgot to report that my memory is supposed to be ddr3 1800 with timings 8-8-7-20. when I performed memtest it says ram is ddr1333 with timing 9-9-9-24. the board also says it supports ddr1800 but when i went to look at the ram setting in bios it only goes up to 1600. I haven't changed anything yet in bios. Where can I look for a bios upgrade since i can't find one on the manufacturers website?