Btw., Vicky, if Win8 is already running, the first thing I would do would be to flash the last available UEFI, unfortunately also almost 5 years old.
https://pcsupport.lenovo.com/de/en/products/laptops-and-netbooks/lenovo-z-series-laptops/lenovo-z50-70/downloads/DS100528
Btw., Vicky, if Win8 is already running, the first thing I would do would be to flash the last available UEFI, unfortunately also almost 5 years old.
https:/ /pcsupport. lenovo. com/de/ en/products/ laptops- and-netbooks/ lenovo- z-series- laptops/ lenovo- z50-70/ downloads/ DS100528