Server Selection Screen

When I try to select a server now for some reason my mouse goes straight to the center of the screen and I cant move it out of the way to select any servers does anyone have any ideas for me to try please and thanks in advanced for taking the time to read

What I always do when that happens is press alt+tab so the game goes into windowed mode, then hit the close button. Pretty sure alt+f4 will work too. For me after doing this I can move the mouse again.