sbalu571 said:
yes i tried that too tablet mode on/off no luck


This icon in your taskbar means you ARE in tablet mode !
win 10 start menu appear top left corner and freezed-screenshot_1.jpg

Click the Search circle icon to R of this and type 'Tablet' to take you to Settings. If the on/off slider there doesn't get you out of it, then it's stuck. Then, Win+R/ regedit for 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 PC

Good Luck