Problem Signature:
Problem event name : StartupRepairOffline
Problem Signature 01: 6.1.7600.16385
Problem Signature 02: 6.1.7600.16385
Problem Signature 03: unknown
Problem Signature 04: 21199277
Problem Signature 05: AutoFailover
Problem Signature 06: 15
Problem Signature 07: NoRootCause
OS Version : 6.1.7600.2.0.0.256.1
Locale ID : 1033
See if this assists you with your Repair options.
You can use the power button to restart your computer three times. This will start the Windows Recovery Environment.
"How To Access Advanced Startup Options in Windows 8 or 8.1"
http://pcsupport.about.com/od/windows-8/a/open-advanced-startup-options-windows-8.htm
"How to Boot to Advanced Startup Options in Windows 8 and 8.1"
http://www.eightforums.com/tutorials/4935-startup-options-menu-boot-windows-8-a.html
There is detailed information here too.
http://www.eightforums.com/tutorials/2843-automatic-repair-run-windows-8-a.html
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And please read this method:
"How to Boot to "System Recovery Options" in Windows 8 and 8.1"
http://www.eightforums.com/tutorials/2269-system-recovery-options-boot-windows-8-a.html