i have been experiencing issues with a server with SLES 12 at reboot, where the GUI does not seem to start and the machine goes to emergency mode.
Once in emergency mode, i am left with the option of rebooting the machine with the installation dvd and doing a emergency repair. Then booting it again and the system manages to go into the GUI.
when looking for the possible problems i have seen the following on the screen:

Firmware Bug: the BIOS has corrupted hw-PMU (MSR 30d is 330)
tsc: Fast TSC Calibration failed

Please provide suggestions.