1. Hold F1 for a few seconds
2. Make sure you are trying to access from a main screen (non-sharing or filtering screen)
3. If your F1 key is not enabled follow the steps below. (See screen shots)
a. Open PC Settings
b. PC and Devices
d. Add the standard keyboard layout as a touch keyboard options
e. Click the keyboard in the quick access icons near the time and select the full keyboard option.