Hi. I built a computer and have had it for about 6 months now. Just last week the motherboard stopped working and would display everything all distorted. I just got a motherboard back from rma but it is a refurbished board. I put everything back together, installed all drivers and everything works. But now whenever im playing games or sometimes just normally using the computer it will freeze, and sometimes randomly restart and read an error message saying blue screen on restart. I put my cpu back to standard settings and nothing else is overclocked. Ive tried using only one graphics card and that doesn't help anything either. Ive ran memtest on each stick of ram and everything shows up fine. Ive also run stress test and all the temperatures are right on the dot so no problems there either. Should i call ASUS up and complain for a NEW motherboard or what can be causing this. Thanks! The board is an ASUS Formula Crosshair IV processor is an AMD Phenom 1090T