Re: wi 10
If you go to cortana, and type reset, a system settings option will pop up and reset the whole pc to factory defaults. probably not as good as wiping the drive multiple times and reinstalling windows, but it should at least make it more difficult for someone to recover the data.
I did this recently for a friend, and it took an hour or two, but her laptop wasn't very quick anyway.
CPU: Ryzen 1700 GPU: MSI R9 480 4GB
RAM: 16gb DDR4 Disk: 128SSD + 2x1TB
Power: 750w asus prime b350m-a uatx mobo