"Your video card is currently configured to display at a refresh rate higher than what your monitor can support. Boot your machine into 'VGA mode' by pressing F8 very early into the boot process and select it from the menu. Once in Windows, select the refresh rate you require (60hz?) and reboot - hopefully, this setting will "stick" and you're done. If not, then you'll need to uninstall & reinstall your video driver. This will also wipe out that stubborn RR info."More from - Tidy