allright! go to your add and remove programs take out the ati display and do not reboot when asked instead do a file search to remove the inf files.search in c\\windows\inf and the file you look for ati*.inf get rid of them all(by the way im assuming you only have one display adapter) k then reboot and you will be back to the default vga adapter.ok now you need to go to run and punch in regedit and windows registry will pop up you now need to go to HKEY_LOCAL_MACHINE\SOFTWARE click the plus next to software and in the directory below it there will be ati technolagies right click and delete it.now since your in the registry you wil go to HKEY_LOCAL_MACHINE\sytem\currentcontrolsettings\sevices\class\display click on the plus you will see at least one sub key labeled 0000 if your regestry is dirty you will see multiple keys like 0001,0002,0003 dont worry about it get rid of them all including 0000 then reboot and there is no trace of ati on your system.ok time to install the new one.i have used this method too many times to count i have never had a problem.CAUTION! if your unsure about navigating and deleting from your registry have someone who knows a little more than you,but its really not rocket science if you follow my instuctions. have a nice day!