Apple Macintosh PowerBook 190 Series - Manual (Page 97)

The computer exhibits odd behavior, such as many unexplained system failures.
m Check for multiple System Folders on your startup disk, using the Find File
command. Throw away extra System Folders (but do not throw away any
System Folders from your RAM Disk Backup folder). The System Folder
that your computer is using has a small computer icon on it.
m Check for viruses on all your disks, using a virus-detection program.
Eliminate any viruses the program finds.
m If a problem recurs when you are using a particular program, try the
following:
m Consult the documentation that came with the program to make sure you
are using it correctly.
m Check for multiple copies of the program on your hard disk. Use the Get
Info command to check the programs’ version numbers. Keep one copy
of the latest version and throw away all other copies.
m Reinstall the program from a known good source (such as the original
program disks or installer disks you made with Floppy Disk Maker).
m Increase the program’s memory. Quit the program, select its icon, choose
Get Info from the File menu, and type a larger number in the Preferred
Size box.
m Contact the manufacturer or vendor of the program to find out whether
the program contains software errors or “bugs” and whether an upgrade
is available.
m Check that the program is compatible with System 7.5 (see the program’s
documentation, or contact the manufacturer or vendor).
m Make sure your control panels and system software extensions
(especially any that you recently added) are compatible with your
programs. See “Checking Your System Software Extensions” in
Chapter 8.
90 Chapter 7