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I'm on a Windows XP laptop and recently inherited a monitor. It unfortunately remains blank when attempting to extend. Things I've tried:

  • Different resolution settings
  • Checking the "Extend my Windows desktop onto this monitor" box
  • Using laptop (HP EliteBook 6930p) function keys (fn + F4)
  • Rebooting

I can't find anything wrong. The monitor should work ok as it was yesterday for the person I inherited it from. When checking the option to extend the laptop desktop, I am able to move my mouse beyond the right border. However, nothing shows on the monitor itself. I've checked to ensure the cable is secure. The monitor's power light is green.

Anything I forgot to check or other ideas? :-/

Thanks.

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Did you make sure you have the most recent graphics driver? I've used that model of laptop and I know that it works on Windows 7. Since you're using Windows XP, you may need to try the different drivers available. Here's what I'd do:

  • Go to Device Manager and try to upgrade your graphics driver and monitor drivers
  • If that doesn't fik it, go to HP's website and download drivers here
  • Try each one, reboot, and see if it works

If that doesn't work, figure out what kind of graphics card your laptop has and try to find new drivers from the manufacturer. Besides that, it could be a problem with Windows XP compatibility.

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Those are good ideas. Thanks. I've never had a case yet where I've not been able to at least get something to display. Even the on-board menus wouldn't show. Another guy couldn't get it to display at my desk either so I used another one instead and it worked like a charm. – MattB Apr 8 '11 at 14:48
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