Originally Posted by
Timmy_Jimmy
Did you get this from steam? If yes then completely delete everything and get it from a different source (use a torrent if you want to). Then when you get it install/place/extract the GTA SanAndreas file into a completely different place like your desktop. Then install SAMP and when you are installing make sure you Browse to your folder in the desktop. Try this, it will take some time but this will most likely fix the problem.
If this doesn't work I'm pretty sure it's a driver problem.