No Startup Disk Found
I erased my hard drive and reinstalled OS X around 14 hours ago, and the problem came around 2 hours ago.
My Macbook was running low on battery, so I just shut it, and a few minutes later it suddenly turned on and without starting up, it showed flashing folder with a question mark.
I tried restarting my Mac by recovery start and everything, and now there is no startup disk to be found.
I restarted my Mac again into recovery mode just in case (twice) and each time it did an internet search stuff, and still there is not startup disk.
Do I need to get my hard drive replaced? (I'd prefer not to because my insurance just expired and don't want to risk much money)
Thanks
MacBook Pro, OS X Yosemite (10.10.4), 13-inch, Mid 2012