Help resetting Kano touch from windows

Hi all, I’ve just bought my son a Kano touch 2nd hand for his birthday today, we built it fine and got it up and running but the person before me has changed it so instead of it loading up as Kano it goes directly into windows. This is not very exciting for a 10 year old. I’ve looked up how to reset but it only tells me how to do it from the Kano launch not windows, I have found the command screen and have tried inputting the reset command but it doesn’t work. Any ideas? Thanks