Probable bad hard drive
I have a Mac Book Mid 2012 and do not know the model number. I have experienced several issues which seem to indicate there may be hard drive problems. I have call support and been to the genius bar regarding my computer. When I shut it down at night within a 30 minute window it restarts. Web pages load slowly, When I did Command R for a recovery it never completed it just stopped on one of the last restarts. I have done NVRAM cleared the cache, used malware bytes done all the updates. It just all seems to return back to some subtle hard drive issue. Any help would be appreciated.