Disable dynamic memory or integration services temporarily, as these can cause boot loops.
To begin repairs, you must boot from the Windows Server 2012 R2 installation media (DVD or USB). icttech.ca Insert the media and boot from it. Select your language and keyboard, then click Repair your computer (lower-left corner). Navigate to Troubleshoot Advanced options Command Prompt Microsoft Community Hub 2. Basic Boot Repairs (MBR/Boot Sector) windows server 2012 r2 boot repair
Moderate
Sometimes a server gets stuck in a "Pending Updates" loop. You can often break this by renaming the pending XML file: windows server 2012 r2 boot repair
sfc /scannow /offbootdir=D:\ /offwindir=D:\Windows windows server 2012 r2 boot repair