How do I use the F8 key on my laptop?
How to use the F8 key. Open the program that uses the key and press F8 . If the F8 key also has an icon on the key, it indicates the key has a secondary function. To use the secondary function, press and hold down the Fn key, and while continuing to hold the key, press F8 .
If F8 isn't working and you've to restart your computer in Safe Mode immediately, try it via the Start menu. Open the Start menu and then Settings> Update & Security> Recovery> Restart Now option. While your computer is in reboot mode, you've to select Troubleshoot under the Select an Option screen.
The F8 key
When you start up your computer, press the F8 function key right before the Windows logo appears. Your computer will then start in safe mode. In Microsoft Excel, you can use the F8 key to select the entire range of cells that lies between two cells you selected.
The F8 boot menu was removed in order to improve system boot time. This is because Windows 10 boots much faster than previous versions, so you won't have enough time to press the F8 key and enter Safe Mode during startup.
F8. Function key used to enter the Windows startup menu, commonly used to access Windows Safe Mode. Used by some computers to access the Windows recovery system, but may require a Windows installation CD. Displays a thumbnail image for all workspaces in macOS.
As you can see, using the SHIFT + F8 shortcut allows you to select multiple non-contiguous ranges of cells with the keyboard (similar to holding CTRL and selecting multiple ranges with your mouse).
Press < Fn >< F8 > to rewind or play previous track. Press < Fn >< F9 > to play or pause a track.
Press fn and the left shift key at the same time to enable fn (function) mode. When the fn key light is on, you must press the fn key and a function key to activate the default action.
Actually, modern PCs have UEFI Bios, which prevent the users to use the F8 key method to bring up the startup menu. But motherboard don't have UEFI or SSD drive then Shift + F8 button may work. But chances are that it will not work. So here are some other working methods to start the Windows 10 in safe mode.
So, SHIFT + F8 allows us to select non-adjacent cells. As in our previous example, make sure you see the text in the status bar only this time it should read “Add or Remove Selection”.
How do I get my F keys to work again?
If your keyboard has an F Lock key, press it to toggle between the standard commands and alternate commands. When the F Lock light is Off, alternate functions work (Help, Undo, and so on). When the F Lock light is On, standard functions work (F1, F2, and so on).
F8 – Used to access the boot menu in Windows when turning on the computer. F9 – Refreshes a document in Microsoft Word and sends and receives emails in Outlook. F10 – Activates the menu bar of an open application.

Alt+F8 Opens the macro dialog box.
Type Shift+F8 once to enter extended selection mode, then use the arrow keys to select an item and press Ctrl+Space or Shift+Space to select (or deselect) it. When finished, type Shift+F8 again (or just move focus to some other window).
Pressing f8 key for three times selects the current sentence. Pressing f8 key for five times selects the whole document.
Tap “Win” + “R” to open “Run” dialog, input “cmd” and hit “Enter”to open command prompt. Then tap in “bcdedit /set {default} bootmenupolicy legacy” and hit “Enter”, you will be recommend that the operation complete successfully. Restart your computer and press F8, you will see the traditional safe mode menu.
Replies (5) Hi Richard, the F8 key does not work in Windows 10 . . . On the third start Windows will boot into the Recovery Environment and from there you can access System Repair, Safe Mode, Command Prompt . . . etc. Please try each option one at a time, then see of Windows will boot . . .