My SP3 has a most annoying "feature": It keeps turning itself back on automatically on after I have sent it to sleep (using "hibernate", i.e. connected standby). This happens sometimes within seconds, sometimes after a few minutes but never later than, say, 30 minutes after switching it "off". It happens mostly, when the device is on power (i.e. charging), but occasionally also while the device is in my carrying bag. This behavior is most annoying when having the SP3 in the same room where one is sleeping, because not only does the screen turn and illuminates the room on but the device always also starts some activity that causes the fan to go to full-speed, i.e. the device gets really noisy! How can I find out, WHAT is causing the SP3 to switch on and how can I find out, what it is doing then? The activity always seems to stop (i.e. the fan almost immediately turns down again) as soon as I log in or start typing on it. Thus, when I e.g. bring up task manager to have a look, the device is always shown as almost 100% idle. So, this must be some background activity, that apparently automatically starts the device and then consumes LOTS of CPU. Any idea, how to identify the culprit and stop this behavior?