I have an HP Pavilion dv6 - upgraded graphics driver as games keep crashing after 5 minutes, but the new driver does not show on the troubleshooter. I upgraded sound driver and that does show OK. Presumably if the graphics driver upgrade does not show it is not being read. I uninstalled it and re-installed, this time it asked for a re-boot ( it didn't the first time) so I thought it had worked - but it hasn't - any ideas? Should I re-install it to a different folder or location?