Hi Meiko27, that blue border means your device is going into Tablet Mode automatically for some unknown reason . . .
Try this Registry Fix:
Click your Start Button, type regedit and hit Enter to open the Registry Editor
In the left pane navigate to:
HKEY_CURRENT_USER\SOFTWARE/Microsoft\Windows\CurrentVersion\Immersiveshell
On the right hand Pane:
Double click TabletMode and set its value to 0
Double click SignInMode and set its value to 1
Restart the Device
That's It!
I totally think that is the problem with mine as well, but when I went to TabletMode the value was already set to 0 and the SignInMode was not there. Thank you in advance for all the help. I have a huge respect for tech experts on forums.