Windows 7 64bit .
User comes back to her desk after being away and had found the computer in this state.
It has happened approx. 4 times in the last 3 weeks. The laptop will always restart ok.
We checked the add/remove programs- nothing installed recently.
We changed the power settings so that dim the screen, turning off the screen and sleep are now set to 'never' (since it seems to be happening after periods of being idle? (Kind of reaching on that one, I know...)
Any thoughts or suggestions welcome!