first of all i decided to build pc rather than buy one,,i got crosshair v formula z with fx 6350 im on a bugdet,,, but i got it built and installed windows 8.1 and messed about on it ,,, i left it a few days and when i turned it on it went straight to repairing disk error got it goinagain ,, left it overnight and same thing happen again but this time it said S.M.A.R.T save files and replaces hard drive (new hard drive )also it came with bios ver 1703 but i made a mistake and ended up with ver 1503 im struggling with updating bios ,,any help would be welcomed