it doesnt list my nvidia card

Is your monitor plugged into the card or the motherboard?

Also look in: start Run... dxdiag

What Device is listed under Display?

it says for main driver
vga.dll

What does it say for Device?

where does it say device?

dxdiag

Display

on the right side is Drivers on the left side is Device

there is no name there
and everything else just says
n/a

Your computer is not detecting any graphics card.

It is detecting and running off on-board VGA.

The first step here would be to open the computer and remove then re-seat the graphics card.

If you are not familiar with working inside computers please read this first:

http://www.d-a-l.com/articles/library/72.html

i di dnt get ur last mesage can u put it in easier terms?

Your computer is not detecting any graphics card.

It is running right now off of the motherboard's VGA chip.

The first test to resolve this is to open your computer and remove the graphics card and then put it back in. It might have come loose somehow.

If after this it is still not detected we can start to question whether or not the card is functonal or not.