specs: I have AMD sempron 3100+ processer, Socket 754 NF8-v nForce3 250gb Socket 75 DDR400 motherboard with sound, sata, raid & gigabit lan ATI Radeon XT 9600 256mb video card with DVI & TV-Out 1GB pc3200 DDR400 Ram Dual Channel (2x512mb, 400mhz, cl2.5 with heat spreaders) (Although one of the sticks was bad so I had to get another stick,may not be exactly the same) Western digital WD1600jb 160gb 7200rpm ata100 hard-drive with 8mb cache 16x DVD writer, black 6x dual layer DVD+r/-r, 16xDVD-r/+r DVD current (third) dead power supply: Pentium IV ATX Switching power supply model: 400W P4 AC input 221/110vac 50/60hz 2/4a fuse pating:F 5a 250VAC DC +3.3v +5v +12v -5v -12v +5VSB Output 14A 20A 10A 0.5A 0.5A 2A MAX 400W I have now gone through three power supplies with this computer. Two when I plugged the cord into the power point first, then the computer, or just unplugged it from the back & plugged it back in ( I didn't realise this could kill one), the other when (according to my mother, she turned the computer on, then she tried to turn the monitor on but it wouldnt come on so she turned the computer off and on, then it just died) But on my dell computer, I can plug it into the power point first then the back of my computer and it doesn't kill it. Does dell have surge protectors or something on their power suppliess? Because if they do when I go shopping for one I want that. Can someone shed some light on this? + what watt psu do you think would be appropriate for my hardware? Thanks.