I have a mecer tablet running windows 10,the problem is that i forgot the password and i never made a password reset disc/usb. The tablet has only one usb, so when i try to reinstall windows using a usb dvd-rom the keyboard doesnt appear, when i try to reset windows i only get two options namely "UEFI Firmware Settings" and "Startup Settings", i dont get any option to reset windows as i have read, so my question is: How do i reset windows in this case?