Need Help with graphics card!

[Barozi]

Toastrules said:

And last but not least; THE POWER SUPPLY. Make sure your power supply has enough wattage to support this. If it's the stock power supply [the one you bought with the pre-built computer], then I highly recommend you upgrade to something like 400 or 500W.

I'd say at least 500W depending on the rest of your system:

http://forums.techarena.in/monitor-video-cards/1392872.htm

http://www.legionhardware.com/articles_pages/inno3d_geforce_gtx_580_oc,11.html