System wont read Graphics card help!!!!!!

[XxLiamxXTEX]

Ok, so something happened with my Pc. It had a virus and I couldn't sign in my PC. So I had to reformat the Computer so that everything is gone and that the virus is gone. So it was. It took all my data away. Anyways, when I tried to play games after I have re-installed them they wouldn't work because it says graphics error

So I went and typed dxdiag to see and on display my graphics card details is gone. It said n/a on everything.
How do I get my Pc to read my graphics card when I reformatted the computer???

Here is the link for the Image if you dont understand me:http://s1054.photobucket.com/albums/s491/XxLiamxXTEX/?action=view&current=7221351e.png

P.S My Graphics Card was from the ASUS EAH series but I forgot the number

Somebody plz halp mah!!!!!

 

[adam_x_brookes]

you need to download the graphics drivers for your graphics card by the sound of it.
Download this:
http://support.amd.com/us/gpudownload/windows/Pages/auto_detect.aspx
And it will detect what driver you need.

 

[XxLiamxXTEX]

I downloaded it, tried to open it and it exited randomly, I tried a few times but its not working...