Time to buy a new one. I think I know why my old one failed, it was probably due to the power hungry geforce 4 ti4600. the old one was only 250 watts. what power supply(wattage) should i choose next time, in order to handle my graphics card. i've never messed with power suppiles before, but after opening up the computer, it looks pretty damn easy(just got to remember which cable goes to which hardware device). are there any tips/suggestions for a guy who wants to mess with the power supply for the first time? all sugggestions welcome. thanks in advance.