I have a mid tower pc with p4 3 ghz processor, 1 gig ram, 400 watt power supply. I have an ATI Radeon x800 xt graphics card which i have just installed. The problem is that the fan on the card is not working. I have tried both spare power leads from the p/s but no go. Is there anything I am missing? Is the power supply high enough wattage?
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