Hi, I have a MacBookPro and it started acting very strange. I was getting the rainbow whenever I tried to do anything, kept restarting, didn't help. Now it is going to the gray screen and won't boot. It gets about 1/3 of the way and stops, then shuts down by itself. I have tried rebooting using the system disk, and disk repair, but it said the disk can't be repaired. This kind of freaks me out. I have run out of options, don't know what to do. I have 2 Macs, this one is a G4 that I am using to write to you. They are both linked in a network and they are set up to back up to Time Machine. Time Machine was set up by my Mac Technician, but he has moved and I have no one to help. It seems the problem is related to Time Machine, I think. It was set up to backup once a day, but I was getting ChronoSync notices on my email saying it had run, with errors. It was backing up about once every 2 hours. When the backups would start, the machine would slow way down and sometimes have to be restarted. At the same time Safari started quitting for no reason. Can you help? I have tried safe start up, starting with control option p+r, none helped. Joanne