m.elsayed00 you need to go into the bios and change the settings to accept the USB drive . you will find it in boot options ( not 100 % sure on lenovo but most bios its found in the boot options) and will require you to change from legacy to EUFI If its already in eufi then switch back the other way . save your changes and then boot to the boot menu and select your drive which should now be visable. Hope this helps