Gents,
Got a very odd problem with my new puter mouse. Basically, every day web surfing no issues, all good. Try to play a game though

I click into the game and it all runs fine, only issue is the mouse pointer on screen continually scrolls down the screen. I can still move it as such, but it keeps scrolling down. Tried different mice, different keyboards, different USB ports but still the same thing. Little short of a complete re-install of Win 7, I'm at a loss here.

After I get the problems, only a restart fixes it.

Ideas?