I dont think a 9800GT will run on a 300 watt power supply...but if so do you have the power connector plugged into the graphics card? Is your monitors cable connected to the graphics card port, or to the same graphics output port it was plugged ino before you put the card in?
There should be a black 6 pin plug in spot on the card. You have to plug the PCIe 6 pin power cord into this location. Exactly what power supply do you have? Does it have a 6 pin PCIe power cable? My guess is it doesnt have one since a 30 watt power supply generally isnt made to run a graphics card that requires external power.
thanks for your prompt reply
.there have been popular forums upgrading slimlines with 9800gt's running with a 270w psu
The 6-pin power cable is plugged in firmly to the back of the gpu. The vga connector from the monitor cannot be connected to the gpu's hdmi port. would an adapter be necessary?
*Another note, when the 6-pin cable is removed the monitor works well and games like Rage, which requires the 9800gt can be played on the lowest setting.