At times I would try to 'alt-tab' to different programs as I am starting up DayZ. Though, there have been several times where doing so from the 'Wait a Moment' and 'Receiving' loading screens would result in the game totally taking away all my ability from switching program windows, or pressing the 'I Understand' button in the Early Game Access acknowledgment page.

I would not be able to switch windows, bring up the Windows Task Manager to kill DayZ, nor to simply alt-tab to a different program. Furthermore, I would be constantly stuck on the 'Early Game Access' acknowledgment window, with no ability to click on the 'I Understand' button - though the game is still running with my character standing in the background with all the animations and effects running correctly.

The Windows 7 'ctrl+alt+del' sequence still works, though pressing the 'Start Task Manager' command would simply bring me back to the 'Early Game Access' window with the Task Manager running in the background - inaccessible. My only solution from that point would be to turn off my computer entirely from the 'ctrl+alt+del' sequence, or to Lock the computer and attempt to relogin, while fighting with the DayZ window trying to stay in front of all the other programs.