I've done a few searches and not found anything, but sorry if this is has been addressed before. I've had my surface book about 6 months and generally I'm very pleased with it. But I have a huge amount of issues where the touchscreen is being activated event though the lid is shut as I'm using an external monitor, keyboard and mouse. Even on boot up when it's disconnected from everything it just got stuck with the cursor in the top left hand corner constantly clicking so I couldn't log in or power off. I initially thought my Bluetooth mouse and keyboard were to blame but having stopped using them I can see its the touchscreen acting as though it's being pressed that is causing the issues. It's very odd watching my machine maximise and minimise and even open windows all by itself and it's getting to the point that typing a document is near impossible. This doesn't happen all the time but I haven't been able to identify a cause, apart from I know not to put my mobile phone on top of the closed lid as that causes interference. Has any one else had this issue? Any ideas on how to fix it? Sometimes a restart or disconnecting and reconnecting the screen solves it , but often not. It's fully up to date running windows 10 with anniversary update and I tried a full wipe and reinstall from scratch last week and the problem remains. The problem happened both before and after the anniversary update.