Normally, you would press the enter key when the Lenovo splash screen displays, and choose options after that. The power manager may need to be reset, hold the power button and hold for 10 seconds after the laptop turns off. There may be a small hole in the bottom case that will reset the power manager, use a small paper clip to poke through the hole and press for 10 seconds. You should run diagnostics to see if BIOS recognizes the drive.