How to Fix Computer Screen "Moves" (Slides?)... (More info inside)

[Snowy21]

Hi, this is my first post here.... so just to start off hello everyone.

But to the problem I'm having.... sorry the title wasn't more descriptive, whenever I change the resolution (it's currently at 1280 x 800) the screen will sort of slide around. It won't show my entire desktop or the entire internet browser or whatever else I have open and I can move the cursor to the edges of the screen to "scroll" over to it... I don't really know how else to explain it.

The normal resolution I'm accustomed to using is 1600x1200 but... if I change it from 1280x800 it starts doing that...

I'm not really entirely sure what triggered it... my family were using the computer and the next day my resolution was different and when I tried to change it it did this.... They claim they didn't do anything regarding the resolution, so I have no idea....

Any help would be appreciated.

Thanks.

P.S. I don't know if this is relevant, but I'm on a laptop. Also, it works fine if I run a full-screen program such as certain games or whatnot...