Problem:
Hyper-V allows for PXE booting with a legacy network adapter, however, you can only add a PXE server to Hyper-V console if your PXE server is running Microsoft's own WDS (Windows Deployment Services). This will not work with LANDesk PXE.
Workaround:
Creating your Provisioning Templates as usual, both for Capture and Deploy.
Then create provisioning media and make it an ISO file (using the toolbar button in the Provisionin tab in your Console). Add this ISO to your Hyper-V library and boot to the ISO with the VM to capture or deploy.
This document is based on the following discussion: Capturing Hyper-V without PXE with all credits on the information for user bdunnuck