This is an HP Pavillion 304b running XP Home SP2. After a recent move, the onboard video plug got damaged. I installed 2 different video cards ( 1 agp and 1 pci) and have the same problem with both. The video resolution appears to be set to 800 x 640, even though it says 1024 x 768. I can change the resolution settings (all of the various settings appear in control panel) but nothing changes on the desktop, it remains unchanged. Any ideas as to what may be going on? Is this a problem related to the onboard video damage, or could it be something corrupted in XP, or perhaps a virus/spyware issue? Thanks.

What cards do you have? Which one is currently installed. You might need remove old drivers and possibly a card in the device manager + BIOS. It's unknown without enough info. Have you tried Right clicking on the desktop and going through this -> properties > settings > adapter -click- [List all Modes] The highlighted one is your current mode, does that say 1024x768? Select another resolution in the list to see if that might do the trick for now. Other then that more information is needed, Drivers for 3 video cards installed, did you clean these up? Are you running your box with just 1 card installed at the moment? What cards are they, ATi;Nvidia ,1 of each? The desktop doesn't change res. but do applications like games or a web browser react to the change? If you can provide that info more help will be available.