gpu not working

[aasimas]

I have a computer I bougth recently, the gateway dx4840 15c. I upgraded it to a new graphics card but its not working. Here is what I did: Took the old one out, put the new one in, closed the case and installed drivers via the amd website. After all thios most games are not working only bf3 is working but its also very slow. Its a new card so I don't know why the issue. Can anyone plz help me?

 

[bccorrupt]

Did you uninstall the old drivers and completely clean them out prior to installing the new card?

 

[aasimas]

in the add/remove programs? I didn't what I did was that I just removed the card physically without doing anything to its drivers and then I installed the new card and its drivers. I guess it makes sense since now the cpu is confused abt which gpu is the correct one.

 

[bccorrupt]

Uninstall both sets of drivers and then use a program like this to completely clean them out. Afterwards reinstall new drivers for your current card.
http://www.guru3d.com/files-details/display-driver-uninstaller-download.html