Hi all, im haven a problem with my power supply in this dell intel pentium 4 i have. I originaly had 250w of power, i then upgraded to 500. I hooked everything up correctly, plugged the power in and on the front of the comp where the power light is, it started blinking orange. I had no clue why it was doing this, so i contiuned to turn it on, but nothing happend. I then took it down to best buy, he looked at it, said everything was connected properly and could only say it must be a Power supply problem. I then bought a Ultra V Series 400w power supply. I hooked it up, put in power, and same damn thing happend, it was blinking orange in the front. I really have no idea why, or what is causen this, and its really stressen me out. If any one could possibly help me, id be very very very greatful. On side note, the 2nd new power supply, the Ultra V, i plugged the power into comp then went to put in the soket and there was a spark, so im not sure if that could of fried the power supply, but i cant tell sense it didnt smell funny, and sense its acting like the 1st power supply i got, i didnt think that was what happend.