Hi I wonder if someone is able to help... Recently maybe the last couple of weeks, the type cover on my SP4 has stopped working. Nothing, no lights or anything. I have seen many ways to fix this by googling and it seems I am not alone. ( I am trying to remember if this became an issue after a windows update...) Some of the methods may work, sometimes if I try them 3 or 4 times, particularly the switch off - hold down vol up and power for 15 seconds, switch on- attach keyboard. However soon after it will fail again. Sometimes after leaving the SP4 overnight it will just start working again! Anyway, upshot is I spend more time trying to get the keyboard working that actually using the SP4, it's become a real PITA! Any advice please?? Many thanks!