21.  He turned the computer off well past midnight.

22.  He turned the computer off, then back on.

23.  His idea was to turn the computer from an appliance into an advertising-sponsored medium, much like network television.

24.  I can connect once to AOL, but unless I turn my computer on and off, I cannot connect again.

25.  I tried to install the new chip, but when I turned my computer on, the LED lights and monitor came on, but nothing happened.

26.  I can only turn a computer on.

27.  I turned the computer off and on again.

28.  I had to turn my computer off to get it to stop.

29.  In contrast, disk drives store data when a computer is turned off.

30.  Intel attributed the slightly disappointing third-quarter results to weak sales of flash memory chips, which hold information when computers are turned off.