I have set my screen saver to start after 3 minutes, however when I'm away from office and come back, the screen saver has not started. The screen saver is set to Blank, and I've tried other screen-savers as well. How can I investigate what holds it back from triggering? I know my Windows Media Player is set to "allow screen saver during playback", and this is not related to that as this also happens when wmplayer.exe is not running. Other programs I run: Remote Desktop, Lync, Outlook, OneNote.