The computer freezes as icons are appearing at the bottom of your screen (system extensions are loading).
mSome equipment may not be correctly connected to your computer or an individual piece of external equipment may be causing the problem.
Shut down the computer and disconnect external equipment. To determine which piece of equipment is causing the problem, reconnect them one by one and start up your Macintosh each time until the problem reoccurs.
mTwo or more system extensions may be in conflict with each other.
Restart the computer, holding down the Shift key until you see the message “Extensions off” in the Welcome to Macintosh box. If the computer starts up, turn to “Checking Your System Extensions” in Chapter 11, “Diagnostic Techniques.”
mIf the computer still freezes, your System Folder may be damaged.
Follow the instructions in “Performing a Clean Installation of System Software” in the “Installing System Software” section in Chapter 11.
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