how can I get my video settings to reset/ fixed?

I have windows XP pro. service pack 3, every update needed has been updated from Windows.
This morning I switched my computer to a different monitor, I played world of warcraft for about 4 hours, everything was fine, I then switched it back to the original monitor (older one, tube) and when i tried to play the game this error message came up "World of Warcraft was unable to start up 3D acceleration. Please make sure DirectX 9.0c is installed and your video drivers are up-to-date."
It won't let me play the game, I downloaded DirectX 9.0c from windows and installed it, didn't work, I also updated my driver and it seemed to make it worse, when I tried restarting on safe mode it just showed everything discolored and nothing recognized at all, kinda like static of different colors.
the monitor it originally had is a big tube monitor, the one I switched it to and played for 4 hours is a plasma or Liquid glass flat screen.
Does anyone know the problem? is it because I changed monitors from old to new and back to old?
is there a way to self adjust the monitor or video settings?
please help me, also every time I move a window it seems slower and it delays when I move it
Who is Participating?
maykelcConnect With a Mentor Author Commented:
after a while it just started working again on its own thank you guys for your help
KaddictConnect With a Mentor Commented:
I'd try to start -> run : dxdiag.
Then see if something's wrong there

Also can take a look at the Display properties (where you can set resolution)
Click advanced
see if the "Video acceleration" is set to maximum

hope it helps

maykelcAuthor Commented:
I checked the Video Acceleration and it is set to maximun, I checked dxdiag, everything seems ok, but on Direct 3D it says "not available"
ktl532Connect With a Mentor Commented:
manually remove video driver at safe mode and reboot pc
Probably that directx updated itself or anything like it

Ahh! Windoze :)
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