My ex just sold me her macbook air and wanted me to erase all her information before I started using it. I erased the hard drive from the disk utility, but when I restarted and attempted to reinstall OS X, it first said "To download and restore OS X, your computer's eligibility will be verified with Apple." I clicked continue and I get an error message saying "Could not find installation information for this machine. Contact AppleCare." I restarted the computer and internet recovery automatically started. This just brought me back to the OS X Utilities. I tried to reinstall OS X again and same error message. Any suggestions?