I just installed the latest Linux Mint (http://www.linuxmint.com/edition.php?id=118) 14.1 Cinnamon via USB-Stick on my 500GB HDD. After the installation I tried to reboot, but got a grub error I was able to fix with BootRepair (https://help.ubuntu.com/community/Boot-Repair) after rebooting with my USB Stick. BootRepair showed up with a message about an EFI-Option (?) in the PCs BIOS (Mainboard: GIGABYTE GA-H77-DS3H) but finally I got my PC booting from HDD.
Unfortunately, I was still unable to log on, at least to the cinnamon desktop; I got immediately kicked out again and saw the logon-screen again. I tried 'Cinnamon (2D)': the same. Finally 'GNOME (classic)' worked and I downloaded (and installed) all available updates. After another reboot the bahaviour is still the same.
I really want to use the Cinnamon Desktop, any idea, what I have to do to get it work?
If it's of any use: Graphics adapter is a GIGABYTE Geforce GTX 660 Ti WindForce 2X
Thanks in advance,
Edit: Searched this forum and googled first, but couldn't find any help for this problem.