the only cause of restart that i've found so far was power and driver issue
300 watt... can you try with bigger power? borrow from your friend perhaps?
Also been trying to save up for new psu
oh, and i have no friends, i'm an anti-social freak who's eyes are glued to his old dell crt even if i did have friends, .1 percent of the ky population is smart enough to know what a psu is, and .00000001 percent have extra psu's lying around