Hi i have win2k8 sp1 machine, i have installed Hyper-V successfully to it.The virtualnetwork is set to external,i have a strange problem. Which ever virtual machine i use, either an existing VHD or boot to a new VHD using ISO, it gets stuck at the booting screen where the Microsoft Logo is on top and a green progress bar is running, it is happening with all OS's.. can any one help me out?