KEY & CLICK · KEYWISE
Know your keys.
Your keyboard, mouse and everyday shortcuts — explained with clear steps and sources you can check.
F11 shows the desktop, but the keyboard test stays blank
Why Fn + F11 can work on a Mac without lighting up a browser test, and how to check the shortcut before retesting.
Read the guide FUNCTION KEYSFn, Globe and Fn Lock: change what your function keys do
Understand Fn and Fn Lock, switch the Mac function-row setting, and find the right instructions for your PC keyboard.
Read the guide TROUBLESHOOTINGA key is not detected: check the path before blaming the keyboard
Read untested-key highlights correctly, compare keyboard behavior, and follow practical connection checks for a keyboard or mouse.
Read the guideClear steps. Traceable sources.
We are starting with three practical guides. Each has an original diagram, a review date and an explanation of its sources. We distinguish manufacturer documentation, observations from our test and conclusions that still need checking on your device.
We do not invent usage statistics or failure rates. Diagrams explain a mechanism or an example, not population data. A source link does not mean its publisher endorses this tool.
Read our corrections →