When using R#, or IntelliJ, the keyboard shortcuts often involving hitting some combination of CTRL, ALT, SHIFT. Unfortunately my laptop (using an Intel graphics card) for Windows 7 has CTRL+ALT+UP and CTRL+ALT+DOWN bound to flipping the screen.

Really surprising the first time and grew troublesome when I wanted to rearrange the order of some methods.

Disable this keyboard short cut on the dialog as shown above. This was accessed via the Control Panel – Intel (R) GMA Driver for Mobile.