I created a bootable Mavericks USB stick to reformat a laptop. After backing up all of my data, I booted the laptop from the USB stick and reformatted the laptop's internal drive. I then used the OS X utitility to try to install Mavericks. After running the installer for about 40 minutes, a screen came up saying that there was an error and that I should contact the software's manufacturer. Even though the installation seems to have failed, it did created a 10.9 recovery partition on the internal drive that I can boot into. When I boot into that partition, there's an Install OS X option where it downloads the remaining Mavericks resources. When that's downloading, it says that the computer will restart automatically. After the download completed, it did not restart. Nothing happened. Ideas? I'm trying to get any version of OS X installed at this point. I had a bootable Lion DVD, but the laptop keeps spitting out that DVD and won't boot from it. I'm attempting to make a Lion bootable USB but keep having issues with that as well.