14 Apr, 2010
Mac Pro Freeze Problem and Won’t Boot
Posted by: admin
What you are going to do if you have a Mac Pro that freezes at boot up. The complete description may sound like this; when the power button is pushed, the chime goes off, the grey screen appears with the spinning ‘gear’, but after about 5 seconds everything freezes. There is no way to reach the login screen and it has had to be resorted to forcing shut down.
Any other efforts have been made by booting from the 10.5 disk that came with the computer and also with the retail copy of Snow Leopard. Booting the Mac Pro via target disk mode and repairing the disk using Disk Utility on the MacBook Pro has also been done but none results.
The possible cause of this ‘disease’ is a dead hard drive or other hardware failure. Apparently it was defective. So, the first thing to try is unplugging EVERYTHING except keyboard and mouse. Try it also without a keyboard and mouse and see what happens. If you have a monitor or keyboard that doubles as a USB hub, unplug everything out of those. Hopefully this will be helpful. Then you will see what the defective USB device was.