A few days ago my Macbook Pro (15-inch), when I tried booting it, got stuck on the blue screen after taking a rather long time to load. Hereafter, I used the Disk Utility on the disk to perform a scan, and there seemed to be nothing wrong with the HD. After this I made a back-up of the HD and "erased" it. Then I tried to reinstall, but it came up with an error message - about 11 minutes prior to the ending of the installation. I tried installing it again and again and agáin.. am I missing something? What's going wrong? Thanx! BTW: Pretty much don't know anything, so I'd appreciate 'full' explanations; already of myself that I was able to work out how the Disk Utility works.