How to enter into BIOS from a Windows 7 or 10 OS using Dell/Other laptop?

  1. Start Windows
  2. Navigate to Settings
  3. Select Update & Security
  4. Select Recovery
  5. Click Restart Now
  6. Click Troubleshoot
  7. Click Advanced Options
  8. Select UEFI Firmware Settings

Alternately, you can keep pressing the F1 / F2 / F12/ DEL button continuously after restarting the system.