time machine will not backup to empty external hard drive after replacing Mac's internal hard drive and restoring
First - I live in a tiny fishing village in Belize, so getting support here is virtually non-existent. There is no one else in my village who even uses a Mac. Recently, my hard drive in my 2012 Macbook Pro 13" went bad (said it suffered a "shock"?) and I was traveling to Cozumel, Mexico, so had it replaced there. We used an external hard drive backup to restore the data to it's last time machine backup (October of 2014). Everything was working fine, until I returned home, added some pictures, and wanted to do a fresh backup. Now, time machine will start the backup, but gets about 113,000 of 181,000 done, and it locks up. I can do nothing - everything freezes, and I have to eventually power down the computer. I even tried deleting the old backup from the external hard drive, erasing it completely, and reformatting the external hard drive using disk utility. Still locking up. It is a 5 GB external hard drive, so space shouldn't be an issue, and it was backed up to the same external hard drive previously with no issues. I'm still running Mavericks, and don't want to try to upgrade to Yosemite until I can be sure I have a backup of my old data and pictures. I am a writer, and use that to make my meager living LOL
I'm stumped. I've looked through the files endlessly but can't find anything similar to my issue. Any suggestions? I know just enough to be dangerous, and don't want to lose everything we worked so hard to retrieve when my hard drive crashed last month.
Thanks!
MacBook Pro (13-inch, Mid 2012)