Resolution no longer available

Today, my computer stopped supporting the resolution I was using. Originally I had it set to 1600x900 or something. I moved it over to another computer for a while (Debian). After I moved it back to the XP computer, I had only 3 resolution options: 1280x600, 1024x768, and 800x600. Apparently the built-in graphics card (Intel) only supports that much (although the monitor still says it supports up to the original). How can I revert the resolution back to the original?
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More about resolution longer available
  1. I take it you are talking about your monitor being moved. Apparently the computer does not recognize the monitor correctly check in display settings in control panel.
  2. No, it recognizes it fine. The monitor works, but it doesn't support the resolutions it supported just a few days ago.
  3. Any suggestions?
  4. Your monitor came with drivers or installation disk?
  5. Be careful that the refresh rate is still the same, usually at 60 Hz, especially from onboard graphics. If the refresh rate changed even to 75 Hz for example, it may affect the available resolutions that the graphics chip can output. Onboard graphics are usually very underpowered, and changing the refresh rate (above 60 Hz) can limit what it can output at that refresh rate severely.
  6. Sorry for the wait, but I think I've found the problem. In XP, if I change the resolution to 1200x1600 (which I did just to test), I'm guessing the monitor sends a "hell no!" to the graphics card, which stores that the monitor can't handle big resolutions. But the only big resolution it can't handle (that is an option) is 1200x1600.

    I'll try to fix it by uninstalling the graphics card driver and reinstalling it.
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