Help!! was only taking a screeny

was taking a screeny..so i put all my settings on max, and i didnt really know what anti listing did, so i put it on 4x and my screen went blue..what can i do, i cant see anything to change it

plz help..plz say i dont have 2 reinstall guild wars.

EDIT: dont worry, fixed it, it was becuase i was running gw in a window, wheni maximized it, it was fine.

For the record though, so that you know next time; Anti-aliasing blends the edges of graphical objects with their background using a partial transparency.
This results in smooth edges.

Instead of a pyramid with the sky behind it looking like this:
-|
-|_
---|
---|_
-----|

With anti-aliasing the color of those corner pixels would be blended with the background color creating an effect similar to this:
-\
--\
---\
----\

if you have an nVidia based videocard you can try to completely disable the antialiasing settings, from Application-controlled to Off. (i dont know the Ati cards)

I get that problem, BSoD ftl! I hate windows so much -_-