Can't start Hyper-V VM - error hypervisor is not ruing

When attempting to start a VM in Hyper-V I am getting the error "Virtual machine 'VM NAME' could not be started because the hypervisor is not ruing". I have confirmed that Virtualization is enabled in the BIOS and Execute Disabled Bit is enabled. I have attempted to run the command:

bcdedit /set hypervisorlaunchtype auto

as suggested by other threads but that did not resolve the issue.

Other troubleshooting tasks include: disabling VM in BIOS, cold boot, re enable; same with EDB.

CPU is i5-2500k, Mobo is P8z68V Pro on latest BIOS (3603). OS is Windows 10.

When ruing system info:

Hyper-V Requirements: 
VM Monitor Mode Extensions: Yes
Virtualization Enabled In Firmware: Yes
Second Level Address Translation: Yes
Data Execution Prevention Available: Yes

I've exhausted all troubleshooting options that I can find, hoping someone can assist.

Thanks.