My computer could live again

Already some of this week my old computer died. I do not know what damage that caused my computer to die. Since I’ve bought a netbook, my old computer so unused. I’ve replaced the motherboard three times, replacing the hard disk up to 3 times, replace the RAM is also 3 times, then buy a VGA card is 3 times as well, replacing the Power Suply 2 times. I was desperate and likely will not use this computer again.