If the VM enters BootLoop during/bevore setup:
add the following line to the .conf in /etc/pve/qemu-server/
1 |
args: -cpu kvm64,+lahf_lm |
Source:
http://forum.proxmox.com/threads/16206-Windows-Server-2012-R2-and-0x0000005D-Error?p=89540#post89540