Ok, so after several tests, I have decided that my ****ty NuPower PSU (380W 18A on 12V) will not work with my HP. I am a little wary about buying a new PSU because there is the possibility that it would not work as well. However, assuming I get a new PSU, what would be the best one? My budget is around $30 and I don't care for upgrades. I only want something that can power an HP (the standard PSU was 250W, 13A on 12V) and a 3850 video card with stable voltage.