I had 3 that i made, 1 i stopped on it becuase it was different inside, 1 i never finished and then this one. I just trashed a computer, i wouldve sent ya the power supply for you to do it.
Cap will bring up the voltage. Yeah Compaqs or nonstandard PCs dont always work but I can make them, I ran a head unit in my room as a stereo for a while lol.