I have an old refurbished MacBook running OSX 10.6.8 and I can't for the life of me get it to start up. It's probably because of something I fussed with recently, but I can't figure out what it might be or how to fix it. Help? So when I start up, it makes the start-up noise and gets past the gray loading screen, and then it stalls on the blue loading screen. I have tried: - rebooting in safe mode, but it won't get past the gray loading bar. It gets about a third of the way and quits. - rebooting in single-user mode and repairing the disk with the fsck command. Every time I do that, it says it had to modify something the first try, but all subsequent tries are fine until I reboot my laptop and it starts all over. - resetting the PRAM - rebooting in single user mode and made a new administrator account, which works well until the screen where I actually create my new admin name & password. It just sits there talking to Apple forever - rebooting from the install disk. I've repaired the disk and repaired the disk permissions, but everything comes up okay on the first try. Sorry for so much info - I'm kind of out of ideas. I've backed up everything to an external HD in single-user mode, but I can't find the disc I used to upgrade the OSX from 10.5 to 10.6, so if I completely erase the hard drive I'll have to repurchase the disc to even use stuff like Chrome (because it no longer supports 10.5). It's cheaper than buying a whole new Mac, but does anybody have any other suggestions to try first? Thank you so much!