Typically only found on apple notebooks and is used to access the f1–f12 keys on the keyboard.

Symptoms

When you press a function key on a Microsoft keyboard, the function key does not work as expected. Alternatively, certain keys do not work when you press them. These keys may include the following:

• The NUM LOCK key

• The INSERT key

• The PRINT SCREEN key

• The SCROLL LOCK key

• The BREAK key

• The F1 key through the F12 FUNCTION keys

NoteThis article only described and resoved the issue on a Microsoft keyboard which equipped with an F LOCK toggle key, issue with other types of keyborad may not applied to this article.

Cause

This behavior may occur if the keyboard is equipped with an F LOCK toggle key, and the F LOCK key has been turned on.

Depending on the keyboard model, the following keys may be alternate function keys:

• NUM LOCK

• INSERT

• PRINT SCREEN

• SCROLL LOCK

• BREAK

• F1 through F12 FUNCTION

The F LOCK key toggles the alternate function keys. An alternate function key is a key that has two possible commands depending on the F LOCK toggle key state.

Workaround

To work around this behavior, press the F LOCK key. The F LOCK key switches between the standard function key commands and the Microsoft keyboard enhanced command.

More Information

Alternate command keys give the keyboard additional functionality by providing two command modes for the top row of standard F LOCK keys.

The F LOCK key and the alternate command keys are available on certain keyboard models only, and the types of alternate commands that are available vary depending on the keyboard model.

The F LOCK key switches between the standard commands that are labeled on the front of the keys, such as F1 or INSERT, and the alternate commands that may or may not be labeled on the keys. When the F LOCK light is on, the F LOCK key is on and these keys perform their standard commands. When the F LOCK light is off, the alternate commands are enabled. You can choose the mode that you prefer to work in, or you can switch the F LOCK key on and off to access the commands that you use most frequently.

The F1 through F12 FUNCTION keys have special alternate commands. These keys are called enhanced function keys. Enhanced function keys provide quick access to frequently used commands that can increase your productivity. These commands are typically printed above or on the keys.

The following table specifies the default enhanced-function key assignments that are available for Microsoft keyboards. However, you can reassign many of the keys by using the Microsoft IntelliType Pro keyboard software. Keyboards differ in what additional keys they provide. For example some keyboards provide keys for such things as Calculator, Volume control, Internet Home page, Internet Search page, Mail, and so on.

To download the latest software for the keyboard, visit the following Microsoft Web site:

https://www.microsoft.com/accessories/en-us/downloads