The hard drive on my iMac died & I had it replaced. They installed a new drive, wiped it clean & re-installed the OS. When I brought it home, I went through set up, pointed it at Time Machine, and viola! next memory my machine was up & running.
With one catch...
I can't get any OS updates. It keeps saying it's unable to check for updates, make sure you connected to the Internet.
I've tried rebooting a few times to no avail. I can also connect to websites just fine, including apple.com.
Any suggestions of what to try?