Windows 8 Automatic Repair

Hello,

My computer is acting up. I have a Lenovo Y50 Touch. I left my computer running and came back 30 min later to see it shut down. I believe that it had ran out of battery since it was low. I plugged it in and when I did it and booted, the automatic repair came up and said “Startup Repair couldn’t repair your PC”. The log file is C:\WINDOWS\System32\Logfiles\Srt\SrtTrail.txt.
I have looked online and tried the chkdsk /f commands and it said no problems were found. Any other ideas ?

Thank you in advance!
David