Video resolution changes to 640x480

Pny Geforce gts 250 video card
January 9, 2010 at 15:26:36
Specs: Windows XP
Just installed the GTS 250 and everything was fine. Ran 3dMark03 and when it finished the resolution went to 640x480 and wouldn't change. I shut down and put my 9600 Gt back in and it would only show at 640x480. I re-installed the 250 and found no change. I then unistalled the display adapter from the device manger and rebooted. I installed the latest driver and eveything was good. I went into COD4 for a couple of games and when I came out of it the resolution went back to 640x480. Uninstalled and re-installed the driver and it is fine. I shouldn't have to do this ech time I play my game or run a benchmark! System specs are as follows: ASUS M4A78t-e, AMDPhenom II x 4 955, 4gb OCZ DDR3 1600, PNY GTS 250 1GB, Windows XP sp3.


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January 9, 2010 at 16:20:48
Just ran Directx diagnostics and when it switched to full screen for the bouncing block, everything reverted to 640x480 again.
Just for anybody that needs it, my monitor is an Acer P221w with a native resolution of 1680x1050. I have tried this with it set as a plug N play monitor and with the inf file for the P221 installed and still the same.

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January 9, 2010 at 22:28:31
Try to reinstal monitor driver.

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January 9, 2010 at 23:57:41
I tried that. Both as Plug n Play and the inf files for the monitor. It is doing it with both video cards so I figured that some XP file got corrupted. Thanks.

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Related Solutions

January 10, 2010 at 04:07:26
Here's what I would do. First of all 800x600 is default resolution.
The driver for the monitor has nothing to do with it. The monitor doesn't care what resolution it runs on (as long as it is within the specs) The only does what its told to. The driver for a monitor is only a color driver (fine tune color). Its a ICM file that one can just copy and paste. Then pick it in properties.

Your problem is the Video driver. I would go to the device manager and uninstall the driver including the hidden video drivers you can't see in the device manager unless you change the environmental settings.

You will have to uninstall all video drivers and video programs.
Here's how you can change the enviromentals to see the hidden (if any) drivers.
(> = go to) > System Properties >Advanced > Enviroment Variables. Type in without quotes:
Place a one (1) in the line below. You don't need to reboot.
No go to the device manager and in the view Tab, CheckMark "Show hidden devices"
Go to your video click on it and all the drivers will show.
No uninstall all of them UNDER your Video Card driver ONLY.

Reboot into Safe Mode; By default "Safe Mode" will 800x600
(you can change the default too but that's another day)
Now go to yours Dev Mgr and look to see if all drivers are gone ? The only one you should see is the default Window VGA driver.

Now you can install the video driver. You can do that right in safe mode unless your manual says otherwise.

I think that's your only choice to clean out the conflict.

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January 10, 2010 at 04:11:44
Sorry got some typo error - tires its 4:15 in the morn.

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January 11, 2010 at 16:51:03
Didn't help.

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