Apple Power Macintosh 7200 - Manual (Page 83)

m The keyboard is damaged.
If you have access to another keyboard, try using it instead. (Turn the
computer off before connecting it.) If the new keyboard works, there is
probably something wrong with the one you replaced.
If none of these procedures solves the problem, consult the service and
support information that came with your computer for instructions on how to
contact an Apple-authorized service provider or Apple for assistance.
You can’t open a document, or you see a message that an application program can’t
be found.
m Some documents can be opened by more than one application program.
Try starting a program that you think might be able to open the document,
then choose Open from the program’s File menu to try to open the
document.
m Purchase and install the correct software to use the document, or find out
if the creator of the document can convert it to a form that one of your
programs can use.
m Don’t try to open the files in your System Folder. Most of the files in your
System Folder are used by your computer for internal purposes and are not
intended to be opened.
m Rebuild your desktop by holding down the Shift key while starting up your
computer. Keep holding down the Shift key until you see a message that
extensions are turned off; then hold down the Option and x keys. Keep
holding down the Option and x keys until you see a message asking
whether you want to rebuild the desktop. Click OK.
m If the document is from a DOS computer, use the PC Exchange control
panel to specify which Macintosh program will open the document. For
information about working with DOS documents on your Macintosh, see
the information about DOS in Macintosh Guide, available in the Guide (h)
menu.
83 Troubleshooting