Hi Extuary,
Thank you for your response.
Are you tying to say that clicking the icon won't load up anything? It should load the information you can find on the link below.
https://support.microsoft.com/en-us/help/4027960/windows-10-turn-tablet-mode-on-or-off
If clicking the icon doesn't do anything, kindly, detach the keyboard, press and hold the power button and the volume up (+) up until the device shuts down. Then, turn it back on, re-attach the keyboard and follow the instructions
on that link I provided.
If it is not doing anything, kindly download this in-place upgrade to
further troubleshoot the issue. Downloading the tool will not delete the files nor the applications you already installed, this will just re-update your device to the latest drivers and repair those that are corrupted. Just click "Download
Tool Now", hit Next once you see "Upgrade This
PC". Once done, you have to re-perform the instructions to turn off Tablet Mode again.
If this helps, feel free to mark this post as an answer. Otherwise, don't hesitate to respond to this thread if you need further assistance.
Kind Regards,
Crest_Z