As stated in the title, when switching on my desktop, the usual thing that happens is that the fan for the graphics card(Nvidia Geforce PX8800GT 512MB) to turn for a while before booting normally. Occasionally the fan for the graphics card just starts spinning and the whole comp does not boot up at all.
I am thinking could it be that the power supply is not sufficient for the card? It is a 315W power supply. I bought this desktop from NEC and it is still under warranty. Should I get the them to change the power supply?
Windows 7 was just recently installed on the system but I think it is not with the OS. There were such problem before even in Windows XP. The motherboard is Intel G33 chipset with a core 2 duo E8400(3GHz, 6MB, 1333FSB).
Hope to get some advice on this. Thanks.