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Troubleshooting Symptom Charts/Peripherals - 20
Cursor moves, but
clicking mouse
button has no effect
1 Boot from floppy or bootable CD.
2 Replace mouse.
3 Replace logic board. Retain customer's DIMMs. Note: When
you replace the logic board, be sure the LED cable is not
interfering with the power actuator.
Double-click doesn’t
open application,
disk, or server
1 Remove duplicate system folders.
2 Clear parameter RAM. Hold down <Command> <Option> <P>
<R> during startup but before "Welcome to Macintosh"
appears.
3 If mouse was connected to keyboard, connect mouse to
computer ADB port instead. If mouse works, replace
keyboard.
4 If mouse does not work in any ADB port on computer, replace
mouse.
5 Replace logic board. Retain customer's DIMMs. Note: When
you replace the logic board, be sure the LED cable is not
interfering with the power actuator.