CWI516 ebook stylus how to install android

Hi! the tablet seems to be dual boot but android is not installed. Can you guide me how to install android.

If it is possible can you also share windows ROM and BIOS too maybe i need them later. thank you
Serial Number : Q32G2515102001483
CPU : Z3736F

can you give me the ebook windows rom, biso file, android flash file, and how to install it?
serial nember : Q32G2515102001297
CPU : Z3736F