I once had an Asus A7V which at first did nothing but crash. Now it's the most reliable machine I have. Don't ask me why, maybe chipset drivers, BIOS flash, or even the order in which I installed the necessary stuff, but I remember many a sleepless night of looking on the internet for answers and tips... I found a lot of info on www.a7vtroubleshooting.com, maybe there is a similar website about your motherboard?