1. Right click the my computer icon left click manage
2. left click device manger , left click display adapters
3.right click the standard vga adapter,left click update driver software
4.left click browse my computer
5.left click let me pick from a list of device drivers
6. if show all harware appears choose display adapters then click next
6.5 if show all hardware does not appear simply click have disk
7 browse to c:\ ati or c:\amd folder that was created when you first tried to install catalyst program.
8 browse to display driver folder inside the amd or ati folder and open the .inf file
9 click ok if correct driver is not showing untick show compatible hardware and choose
the correct driver then click next.
make sure you are installing 32 bit drivers for 32 bit systems and 64 bit drivers for 64 bit systems- and if you are trying to install a legacy(old) ati card driver make sure to download ati catalyst for legacy cards.