Want to give a little more info on what the screen is even displaying on this "black screen of death" ?
Possible causes: - Corrupt file that is required to boot - BIOS might be corrupt - CMOS might need to be reset or the CMOS battery might need to be replaced
Possible fixes: - Reinstall operating system - Update drivers (if possible) - Replace damaged hardware? -- Life is a game of blackjack. You keep playing until you bust.