I have an old netbook which I dual-boot Zorin 16 and Win7.
I followed the instructions on this forum to install XCFE4 as I prefer that look - all good, no problems, switched off the netbook this morning with everything working fine. Just booted it back up and it gets stays stuck on the "Zorin" screen and doesn't boot and further.
I know specs of my netbook are very low, but it did actually run quite decently until this problem.
OS - Zorin16 Core
RAM - 2GB
HDD - 480GB SSD
Like I said, I did install XCFE as per this post (OS 16 Core with xfce). No errors or problems.