Bought a new wireless trackball mouse - the Logitech M570. It worked fine for about ten minutes when the screen suddenly went blank. The computer was still running, but the monitor was receiving no signal. Several re-starts with and without the new mouse, and without other USB devices plugged in, and no change. Blank screen.
So I pull out my netbook (both it and my desktop use Windows XP)… and the same thing happens! The netbook starts up and even plays the little Windows startup song, but the screen is completely blank from the moment it is powered on.
What the hell? How could a new mouse make my computers stop talking to their monitors? And what the hell do I do about it?