Yes, I know, I’m an idiot, that’s a given. Laptop was plugged in, but socket was not switched on
So, now my laptop won’t boot, it’s stuck on the loading screen, then clearly tries to do something as a window or 2 flashes up, but then gives up and starts again.
I did exactly the same when going from 7 to 10. Luckily it just came up with a “installation cancelled” message and rolled itself back to W7 and I was able to start the upgrade again.
I’m pretty sure you can download the Win10 ISO and install fresh from that. (Not done it myself but was mentioned on the other Win10 threads here)
Yep, I also did that. Use the Microsoft media creation tool (http://www.microsoft.com/en-gb/software-download/windows10 ) to create a usb stick or DVD that you can use to do a clean install at boot.
I fitted a new hard drive, all my documents are on a NAS so I was happy just to do a clean install rather than copy the old HD to the new one. I created the USB installation drive, swapped hard drives, booted from the USB, left the laptop doing it’s thing for about 30 minutes and came back to a fresh install of Windows 10.