So, last night I came home from work and attempted to cut on my computer. Assuming that nothing was wrong with it at the time because less than 8 hours before then I was using it. When I tried to start it it stayed on the boot up screen and the wheel of dots kept spinning. I gae it some time just thinking that maybe it was being slow. But after a couple of minutes I shut it off. I tried at least three more times but I had no luck. I started it using CMD+R and attempted to repair the permissions and the disk. Unfortunately this didn't work either. Today I tried to do the same with the installation disk, this didn't fix it either. Is there anything I can do to fix it myself? Unfortunately someone needed an external hard drive a couple of weeks ago and I assumed that my Mac would be ok so I let them use it to back up their computer.. Boy do I regret that now.... I don't live very close to an Apple store so taking it to them is a bit of a stretch. I was wondering if it was possible to create a time machine backup from the installation disk? I don't know if thats possible but it was just a thought I had. Thanks for any and all help.