When you migrate your Virtual Server or Virtual PC virtual machine to Hyper-V, you:
- remove the VM Additions
- move the VHD
- create a new VM
- install the Integration Services in the new VM
If you have trouble in this process, and it looks like the integration services did non install correctly (mouse doesn't work correctly, for example), you may have a HAL mismatch.
By default, Hyper-V will install an APIC MP HAL when the Integration Services are installed in the virtual machine. If the VM had a different HAL, try changing it.
To change the HAL
Click the Boot tab, and then click Advanced options…
Check Detect HAL, click OK twice, and then restart the virtual machine.
Note Changing the HAL will usually trigger an operating system re-activation.