The F1 key is a function key found at the top of almost all computer keyboards. The key is most often used to open the help for the operating system or the active running program. F1 also has other uses depending on the computer and program, as mentioned below.
How to use the F1 key
Open the program that uses the key and press F1. If the F1 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 F1.
If when pressing the F1 key the secondary function is performed (e.g., mutes audio), the function keys are the secondary function. For example, on an Apple computer, to press F1, hold down the fn key, and press F1.
If the FnLk (function lock) is enabled, the keyboard acts as if the Fn key is being pressed until it is unlocked.
Information about what the secondary function may be is found on the below secondary function of F1 section.
Where is the F1 key used?
The following list is all of the locations the F1 key can be used with information about how it's used.
Open help with all programs
With almost every program, this key functions as a help key. When F1 is pressed, a help screen window in the program is opened, or you'll be directed to a help web page on the Internet. Some programs without a help option may open the About screen.
In the latest versions of Microsoft Windows, you can also press the Windows key+F1 would open the Microsoft Windows help and support center.
Enter BIOS setup
On many PCs, as the computer is booting, you'll see an option to press the F1 key to enter setup. Pressing F1 when this message is displayed enters the BIOS or CMOS setup.
Other F1 uses
The secondary function of F1
For laptop keyboards and desktop computer keyboards with the Fn key, each function key has two functions. Unfortunately, there's no standard to what each key uses as its secondary function, so every keyboard is different. Below is a list of different keyboards and their secondary function for the F1 key.
- Apple keyboard F1 key
- Cooler Master keyboard F1 key
- Dell keyboard F1 key
- HP keyboard F1 key
- Lenovo ThinkPad F1 key
- Logitech keyboard F1 key
- Microsoft Surface F1 key
Apple keyboard F1 key
Cooler Master keyboard F1 key
On Cooler Master desktop keyboards, the F1 secondary function is one of the following options depending on the model.
- With a single-color keyboard backlight keyboard, FN+F1 enables and disables the backlight.
- With a multiple backlight colors (RGB) keyboard, FN+F1 changes the colors.
Dell keyboard F1 key
HP keyboard F1 key
Lenovo ThinkPad F1 key
Logitech keyboard F1 key
Microsoft Surface F1 key
Related keyboard shortcuts and keys
Below are links to related keyboard shortcuts and individual key pages.