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Windows XP External Projector Problems (Garbled Display)

Im running a Dell Latitude D600 and am trying to project a presentation using an extrernal DLP projector. The computer displays all the information on the screen correctly however when I hit Ctrl+F8 to switch from the LCD screen on the laptop to the external projector the picture displayed on the wall, screen, etc is all garbled and jumpy. Every time that I attempt to switch to the projector an error message comes up stating "The resolution that you are using is less than your best resolution (1400x1050). I hit the Ctrl+F8 again and return back to the laptop and everything works fine. So far I have tried changing the different screen resolutions, changing the settings in the video card (ati radion 9000) for multiple displays, and reinstalled the video card drivers and still not working. I dont really know where else to go on this problem.
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mpatrick65
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mpatrick65
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2 Solutions
 
JBlondCommented:
As your display of your laptop, the projector has an ideal screen resolution. If you use another resolution the quality decreases as on any other display...
On your laptop switch the resolution to the ideal resolution of the projector and then hit Ctrl+F8 or do this when your viewing your desktop via the projector.

Most projectors use a 800x600 pixels or 1024x768 pixels resolution.

Hope that helps...
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mpatrick65Author Commented:
I have tried switching the resolution after switching to the projector and it still displays the same garbled/jumpy resolution on the projector screen.
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simkissCommented:
you do not want to setup multiple displays.  you need to change your refresh rate to 60Hz on your video card and change the screen resolution to 1024x768 BEFORE you switch to the projector.  i'm using a projector right now as my monitor in fact :o)

if you don't have any luck changing your refresh rate to 60Hz, try plugging the projector into a different pc.  
let me know what you get.
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mpatrick65Author Commented:
Ive tried switching the resolution of the computer both before and after the conversion to show on the projector. I also checked and made sure that the refresh rate for both the laptop and the projector was set at 60 hz. Im familiar with what a picture with wrong refrsh rate looks like, this isnt really like that. The picture comes up on the screen and the top and right hand side are all messed up while the rest of the picture isnt that bad.
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simkissCommented:
ok, did you try connecting it to a different pc?  
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mpatrick65Author Commented:
Yes I connected it to another pc and it worked fine. That is why Im so lost on why it wont work on this one.
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JBlondCommented:
Are you sure that your VGA or DVI-port on your laptop has no malfunction?
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simkissCommented:
can you connect a regular monitor to the laptop then?

if you can connect a regular monitor to your laptop and it works, and you can connect your projector to a pc and that works, the only other thing that I can think of is that when you set your refresh rate on your pc at, say 75 Hz for example, it's never exactly 75 Hz.  It's more like 74.8734 Hz or something.  I am wondering if your projector cannot lock on to the signal.  It's really tough to tell without seeing it though.
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