Fallout – Mouse acting strange ingame, screen rotates on right mouse move

fallout-new-vegas

ok so when i'm ingame (fullscreen)
when I hold the right mouse button to zoom in with the scope on a weapon and then move the mouse to align it with a target, the screen just flips 90° in any direction so I need to find my bearings again and align it up again.

I got the problem with:

  • Alien vs Predator
  • Fallout 3
  • Fallout New Vegas
  • Medal of Honor 2010

but i don't have it with any of the Call of Duty games or Singularity.

So it is not a hardware problem. I also tried:

  • swapping my mouse
  • updating my gfx card
  • switching from hold right mouse to toggle

but nothing helps.

Any idea what would be causing this?

Best Answer

I would guess that this is caused by a tool that came with your mouse that allows you to define custom actions for you mouse buttons. Try to find out if you have anything like that installed and deactivate it.