I need to purchase a new power supply for a Compaq computer.?

I think you should just give up the computer all together. we had a compaq and it was just so bad it didn't turn on when we pressed the on and we had to pray for it to turn on. we got mad that we decided to hit the computer to see if it would turn on. this was all because of the power supply. not. a good computer and I reccomend you return or sell it after moving your files to a thumb drive