Is this the graphics driver you installed?
Catalyst 6.12 for Radeon Xpress 200M
Boot into safe mode and go to Control Panel > Add/Remove Programs and uninstall the Radeon drivers and Catalyst Control Center. Reboot into VGA mode. Disable antivirus. Reinstall the drivers and reboot again.
Catalyst 6.12 for Radeon Xpress 200M
Boot into safe mode and go to Control Panel > Add/Remove Programs and uninstall the Radeon drivers and Catalyst Control Center. Reboot into VGA mode. Disable antivirus. Reinstall the drivers and reboot again.