Virtual Switch Issue on Hyper V 2012 R2

I am getting issue while creating virtual switch on Hyper V 2012 R2. After investigation I found the physical NIC I was trying to bind to virtual switch has already hyper v protocol enabled (vms_pp) so I tried to disable it using powershell cmd (also tried nvspbind, netcfg ) but I am getting error saying NIC is already locked by service NVSPWMI. So I tried to locate the that service but it seems like it is not present in Hyper V 2012 R2. So anyone knows how to get rid of these issues.