Hi Nkchandra,
Thank you for visiting the HP Support Forums and Welcome. I have read your thread on your HP Pavilion 15-n011tu Notebook and getting DRIVER_POWER_STATE_FAILURE error when Hyper-V is enabled. I have read up on this and it suggests your Notebook MotherBoards is not capable. Most business MotherBoards are Hyper-V enable. The most resent BIOS update is 2014-01-03. This might work.
Thanks.