I had to delete my snapshot to be able to expand one of the drives. After expanding I cannot start the system anymore. I still got the original VHDs and an an XML file in the Virtual Machines folder but that's all I got left in that folder. Is there a way to rebuild the system based on the VHDs an

How did you delete your snapshot?  Did you do it through Hyper-V or did you just go to Explorer and delete the AVHD file?

Solution is almost answered in the below forum:

https://social.technet.microsoft.com/Forums/en-US/aedb3617-6bf6-4bd5-a987-85a88169985c/server2008-vm-hyperv-wont-boot-after-expanding-its-vhd?forum=winserverhyperv.

I happened to have similar issue - using the above solution fixed the issue.

Deleted thrugh Hyper-V. Also before anyone asks shadow copoies are disabled on that box.