2012 MacBook Pro not seeing the hard drive
My laptop was sitting open and on. I wasn’t using it at the time, although I had been about 30 minutes before, and the screen went blank. After a bit the folder with a ? started flashing. I restarted in recovery mode and went into disk utility and clicked verify. Repair was not available. It my hard drive with a capacity of only 1.5 gigs but I installed a new 500 gig HD about 2 years ago. Verify did nothing so I decided to bite the bullet and restore from a backup(over a year old). When I got to the point of selecting a volume to restore to there was no option. It was not seeing the HD at all. At that point I opened it up to make sure no connection had come loose. I found nothing. Any suggestions on what to do next are greatly appreciated.
MacBook Pro 13″, macOS 10.14