In this case, you will need to restart the process to see if it solves the problem. 1) On your keyboard, press the Ctrl , Shift, and Esc keys at the same time to open Task Manager. 2) Locate Windows Explorer and click End task. 3) Restart your laptop to see if the black screen issue has been eliminated. The company's latest offering is the Lenovo IdeaPad S300 - a smaller and more portable 13.3-inch proposition than the U410, but with an equal amount of power. It sports a third-generation Ivy
Select "Lenovo OneKey Recovery System" using the directional keys and then press "Enter" to boot into the recovery environment. Click "OneKey Recovery," select "Restore From Initial Backup" and then click "Next." Click "Start" and choose "Yes" at each prompt to reset the Lenovo IdeaPad to its factory default condition.
the full process for resetting bios password to a lenovo ideapad 15IBY( or 14IBY)some tools we usekapton tape :
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lenovo ideapad 100 15iby boot key