Macbook Pro won't go past OS X Utilities
I tried repairing the hard drive in Disk Utility with first aid, but it says it can't complete the repair


Upon this kind of error, the first thing to understand is that you can't
achieve anything of any value with your internal disk as long as it is
in this unusable state.

This explains fully that your Mac is automatically trying a recovery.

Get (or make) a bootable USB key or DVD installer (they should be safe and obviously not built with your unsafe MacBook Pro).

Boot from it.

Start Utilities, Disk Utility and try to repair your internal disk
from a safe version of Disk Utility.

If you succeed,

then install a clean version of the version of MacOS X you can install
from an external safe medium (USB key or DVD installer),

else replace your internal disk.