Tablet must have restore partition with archived windows on its emmc. Try to search how to launch self recovery of windows. I know usually there is a hothey for POST screen to launch recovery.
No need to post photos 🙂 just your impressions about them pleaase.
Yeah and about charging. I heared that such cheapmchineese tablets are still draining battery while beeing connected to power suply and even light using at the same time.