Ask Max: My iMac has the famous blue screen since I upgraded to 10.5.6...
I just installed OS X 10.5 in an iMac (Intel powered 17") I then did the on-line upgrade to 10.5.6. All went well until the iMac restarted. I get the chime and the gray Apple Logo and below the I see the spinning indicator.
Next I see a blue screen. And that's it. The screen remains solid blue. I booted up using the OS X 10.5 install disk and was able to run Disk Utilities, which found the hard disk to have no problems. I have turned off power using the switch in the rear then restarting via the power switch. Same scenario with a blue screen as a final result. This iMac has only 512K or RAM. Could this small amount of RAM be causing this problem.
What do you suggest I do next?
You best option is to boot up off your OS X Leopard install disc and do an Archive and Install of the Mac OS. It will not overwrite your personal data, just the broken System files. Apple provides more information on Archive and Install as well.
Although 512MB is the minimum for 10.5, you should add another 1GB stick of RAM. I find that 2GB of RAM is perfect size for the Mac OS X 10.5 system.