Problem: Windows 8/8.1/10 shutdown is hybrid shutdown where contents of memory are saved to disk to achieve faster startup. However, turning on the PC after a hybrid shutdown does not allow for pressing F1 or F12 during startup to enter BIOS because Windows boot up too quickly to listen for a key press at startup. Follow below steps in order to access BIOS on Windows 10 PC.
Content Summary
Solution 1: Enter BIOS Setup Utility
Solution 2: Access Boot Menu
Solution 3: Shift key with Shutdown
Solution 4: Restart
Solution 5: Disable Fast Startup
Reference
Solution 1: Enter BIOS Setup Utility
Step 1: Go to Settings > Change PC Settings > General.
Step 2: Scroll to the bottom and click on Advanced Startup, then Restart Now button.
Step 3: Click on Troubleshoot > Advanced Options > UEFI Firmware Settings > Restart.
Solution 2: Access Boot Menu
Step 1: Go to Settings > Change PC Settings > General.
Step 2: Scroll to the bottom and click on Advanced Startup, then Restart Now button.
Step 3: Click on Use A Device > Boot Menu.
Solution 3: Shift key with Shutdown
Step 1: Press and hold Shift key while selecting Shutdown option in Windows 8. This will make the PC perform a full shutdown instead of a hybrid shutdown.
Step 2: F1 or F12 can be pressed successfully during startup.
Solution 4: Restart
Step 1: Select Restart instead of Shutdown.
Step 2: F1 or F12 can be pressed successfully during startup.
Solution 5: Disable Fast Startup
Step 1: Go to Control Panel > Hardware and Sound > Power Options.
Step 2: Disable fast startup option in power buttons.
Reference
Lenovo Blog: How to Enter the BIOS Setup Utility or Boot Menu with Windows 8.1 | Support Tips