Power Mac 8600 has permanantly gone to sleep

For some reason when I went to shut it down the mouse cursor turned into a watch dial with the hands going around and around.
John Orwen wrote on :
Hello, I have a Power Mac 8600 with OS 9.1 and 256 mb of Ram and a 604e 300 Mhz processor. For some reason when I went to shut it down the mouse cursor turned into a watch dial with the hands going around and around. The computer would not shut down. It stayed this way for over an hour and I finally had to pull the power cord out of the back of it to get it to turn off. There seems to be no other way of powering it down when it decides it wants not to. When I powered it back on, the first aid program ran and I clicked on done. After a few minutes the cursor again turned into a watch dial and there it sets again. Cannot do anything at all with it except move the mouse cursor ( watch dial ) around. I can't power it off. What do I do ?
John Orwen replied on :

I got the computer to restart by pressing the combinination of ( 4 circle loop ) key, control key, and the power key. When the computer restarted it came up with first aid and reported an improper shutdown which was " A system error occured - Unimplemented trap error. It gave the option to restart the computer while pressing the shift key to bypass all extensions while booting up. It then booted up and allowed me to use the mouse to navigate and click on icons to open them. It did not load any of the icons that are normally on the bottom of the desktop. I then restarted the computer and the same thing. Improper shutdown and first aid and the same error being reported. How do I go about determining what extension caused the unimplemented trap error and then how do I go about eliminating the error or repairing it. Any help will be greatly appreciated.

"John Orwen" jorwen@redacted.invalid wrote in message news:wJSTc.75664$6t1.44143@redacted.invalid

Hello, I have a Power Mac 8600 with OS 9.1 and 256 mb of Ram and a 604e 300 Mhz processor. For some reason when I went to shut it down the mouse cursor turned into a watch dial with the hands going around and around. The computer would not shut down. It stayed this way for over an hour and I finally had to pull the power cord out of the back of it to get it to turn off. There seems to be no other way of powering it down when it decides it wants not to. When I powered it back on, the first aid program ran and I clicked on done. After a few minutes the cursor again turned into a watch dial and there it sets again. Cannot do anything at all with it except move the mouse cursor ( watch dial ) around. I can't power it off. What do I do ?

Matti Haveri replied on :

In article iHTTc.75670$6t1.60746@redacted.invalid, "John Orwen" jorwen@redacted.invalid wrote:

How do I go about determining what extension caused the unimplemented trap error and then how do I go about eliminating the error or repairing it.

Extensions Manager: 1st enable OS 9 base, then OS 9 all, then half of the 3rd party extensions, then other half etc.

You may also try to move all preferences to some other folder and start moving them back half set at a time.

Or: make a backup of your documents and other important stuff, reformat and reinstall from scratch.