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19.2.1. Faults and Possible Causes
The screen is black.
• This fault can have various causes:
− The operating light (on/off switch) does not light up and the Notebook is in
hibernation.
Solution:
Press the on/off switch.
− The sleep light is flashing. The Notebook is in sleep mode.
Solution:
Press the on/off switch.
− The background lighting has been disabled using the Fn+F7 keyboard
shortcut.
Solution:
Reactivate the background lighting by pressing any key.
The Notebook turns itself off during operation.
The battery may be flat. Plug the Notebook in using the mains adapter and
charge the battery.
The Notebook cannot be switched on.
If you are running the Notebook on batteries, check that they have been insert-
ed correctly and are fully charged.
No data can be read by the optical drive.
Check whether the disc has been inserted correctly.
The WLAN/Bluetooth connections do not work.
Check that flight mode is disabled.
The touchpad is not working.
To activate the touchpad, press the Fn + F9 keyboard shortcut.
Apps (e.g. the weather app) cannot be displayed as live tiles.
Check the date, time zone and time.
