Apple Power Macintosh 8200 - Manual (Page 70)

m Turn off your computer with the power button on the front panel of the computer, wait
at least 10 seconds, and then turn it on again.
If the computer does not turn off, try pressing and holding down the power
button for 3 to 4 seconds.
m If the power button doesn’t turn off the computer, unplug your Macintosh.
m If you suspect that the problem is with other equipment, such as a printer or an
external hard disk that’s attached to your computer, turn that equipment off and
restart the Macintosh.
Rebuild your desktop
A process known as “rebuilding the desktop” helps your Macintosh keep
track of data on your startup disks. (Although you usually use the hard disk in
your computer as a startup disk, you can also start up from any other disk that
has system software installed.)
Rebuilding your desktop can solve a number of problems, such as when
application documents are no longer represented by application-specific icons
(and are instead represented by generic icons on the desktop), or when a
document won’t open when you double-click it.
Some extensions may interfere with rebuilding your desktop. To prevent
problems, you’ll need to turn off all extensions except Macintosh Easy Open
before you rebuild your desktop. When you finish rebuilding the desktop, turn
the extensions you normally use back on.
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