Hello. When I turn on my computer, windows XP loads up and after the windows page where the computer shows the black screen with the windows logo and the bottom scanning icon the screen goes black and about 2 minutes later, the screen shows no signal and shuts off even though the computer is on.I recently removed my DVD burner and haven't replaced it but the CPU was working fine for 5 days without it. I've run malwarebytes and ad aware but found no issues. Please help. Thanks in advance for your help.