Hard to say as one of the reasons with PC Power & Cooling Power Supplies are expensive is it delivers the actual current of 450Watts on all the rails at the same time under full load since this is a $500 power supply while other brands usually can deliver less when under load which is why they sell for $150 or less and this is the one where I replaced all the caps with good ones. Remember the video card had external power that somehow got disconnected on it's own for 6+ months so it could also be that the GPU itself or other components died from the heat as the fan on the video card was no longer running for all that time as this machine is 24/7/365. Ofcourse it's possible it's the PSU is having problems again but the better way is just to use my other video cards which are literally almost the same model as this is just a FX5900 instead of the FX5950 currently in it, the FX5950 is just a slightly newer FX5900. I have an entire thread from 2014 on replacing the capacitors on the PSU in question at:The problem could be the computer power supply not being able to keep up with any extra load you I would use heat on the caps of the power supply and see if that helps you may be getting too much AC ripple on your 5 Volt DC which will cause all kinds of crazy things to happen There is more then one 5 volt DC line, use heat on all the caps in the power supply and see if all your issues go away then use cold to screw it up as a test
Replacement Capacitors for PC Power & Cooling, Inc. Turbo-Cool 450ATX Power Supply - Badcaps
Technical discussion for power supplies. This covers PC supplies, and any other related power supply issue. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
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