Can any one help me if they have the time.
I just went to start up my Macintosh Performa from 1996. It worked fine the last time I used it around a year ago. Now nothing. It just shows a small question mark in the middle of the screen. So I got out the installation disc for it, and it wont let me install because it says locked. I'm puzzeled. I was using it for the printer hooked up with it, now I can'r do anythiing with it. I will not throw away this computer until I know it's finished for sure.Thanks in advance. The printer is a good one too, prints great, so I hate to trash this computer for the printers sake.
If your Mac doesn't start up
If your Mac starts up to a flashing question mark, but then doesn't continue starting up, try these steps.
Turn off your Mac by pressing and holding the power button for a few seconds.
Press the power button once to turn your Mac back on. Immediately press and hold the Command and R keys on your keyboard to start your Mac from macOS Recovery. Keep these two keys held down until you see an Apple logo or globe.
If prompted, select a Wi-Fi network to connect to the Internet as part of startup.
After the macOS Utilities window appears, choose Startup Disk from the Apple menu.
Select your startup disk, then click Restart.
If you don't see your startup disk in the Startup Disk window, close the window and try the next sections of this article.
https://support.apple.com/en-us/HT204323