I heard from a user about a problem with the signed Xeltec drivers. So in case you are having the same problem :-
My new PC has windows 10 installed as UEFI. Installing it that way enables secure boot by default and saves the default keys to your motherboard. Secure boot adds another layer of driver authentication, which causes the Xeltec patched driver to fail.
In order to fix this, you need to disable secure boot (which is motherboard specific).
Once disabled, the driver plays nice. Only caveat – your system is now (technically) susceptible to rootkits and other forms of malware that attack your drivers. Not a huge concern if you’re not using fishy software.