HP ATI Video Driver and Control Panel VDRV-8.40-070721A-066768C-WHQL REV:A Publisher's description
HP ATI Video Driver and Control Panel VDRV-8.40-070721A-066768C-WHQL REV:A
Microsoft Windows Vista driver and control panel
HP 540 Notebook PC
It is highly recommended to always use the most recent driver version available.
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Try to set a system restore point before installing a device driver. This will help if you installed a wrong driver. Problems can arise when your hardware device is too old or not supported any longer.