Problem:
I am using Lenovo Ideapad laptop, when pressing F2 or, Fn+F2 the system not entering into the BIOS.
Resolution:
Step 1: Go to Start > Settings > Update & Security.
Step 2: Under the Recovery window, click Restart now.
Step 3: Click Troubleshoot > Advanced options > UEFI Firmware Settings.
Step 4: Click Restart and your PC can go to BIOS.