stuck in 4 bit

i restarted my computer but when it booted up it was all weird, the colors are different and any pictures either on my desktop or on the internet look really bad and greyish

theres a lot of grey and the style looks really old fahioned
there is some color but its mostly grey

can anyone tell me how to fix this?
i dont think it changed to windows classic style because its a lott messier and there is blots of grey every where

First try a System restore to a point prior to the problem:

start > All Programs > Accessories > System Tools > System Restore

i tried that but it didnt let me pick a date to when my computer was running properly, it only let me pick today's date

do you have any other sugggestions

Try a different monitor.

If the problem replicates on two monitors then try uninstalling then reinstalling your Graphics drivers.

the different monitor thing doesnt work ...any other ideas.
before this happened i removed some progroam that i didnt need in themadd/remove thing in the control panel then i restarted my comp and this happened

Did you try another monitor? If so what happened? Was the problem the same or not?

i'm stuck in the 4 bit color and it wont move higher and my computer color scheme is pretty messed up since it runs only on 16 colors

how do i fix this

i have a windows xp

Uninstall then Reinstall your graphics drivers.

how do i do that

What is the make and model of your graphics card?

If you did not install it or do not know then what is the make and model of the computer?

Did it ever work properly? If so did you do anything that coincided with this issue? (such as reinstalling XP)?