Windows 10 Product Key Activation Issue

[Heydon2015]

Hi Compton , yes I have tried that it then I get the error that says windows cannot perform fix as the disk is write protected , I honestly don't know where to go from here but I'm now certain that the hard disk has no bad sectors after running western digital's surface scan ...which took 4 hours ! To be expected though on a 2TB hard drive , I thought I was gonna be ok when earlier this Evening I tried reset PC ...it got to 45% then came up with the blue screen of death ....