You probably:
a) got a corrupted download (it happens)
b) AntiVirus apps can interfere with video-driver installs (disable-temporarily)
c) sometimes you reall need to "clean house" and get rid of all the remnants of prior driver-versions.
unfortunately the app I used to use for free has now gone "pay" --it is only $10.00
your call:
http://www.pchelpforum.com/installat...tml#post145751
Download the lates driver edition for your hardware to an easy-to find location
In all cases -- it's a good idea to go through device mgr/scroll down to video adapters-- select yours/properties/uninstall.
There will be alarms going off/warnings on screen ignore them-- this will uninstall your present drivers.Windows will say reboot/when you do your screen should look very strange... huge Icons etc--due to low-resolution default drives in Windows itself. Just go to the location you saved your new driver files to-- double click it andit should install no problem