Hi again... So, I Googled 'SP3 not staying asleep' and got back a pretty spot-on top hit of what is ocurring with mine. The link to it is here: http://www.reddit.com/r/Surface/comments/2avnyd/sleep_broken_on_all_surface_pro_3s_no_way_to/ ...and an excerpt is here: "If you put the Surface Pro 3 or 2 to "sleep" and close the cover it will wake up right away. Regardless of windows wake settings! This happens anytime a keyboard button or input on the trackpad is detected. This also happens with external mice and keyboard. There is NO WAY to disable this. You can goto the advanced hardware wake features on the devices and disable it and it won't make a difference. So right now ALL Surface Pro 3 users have this issue. This is actually also an issue on Surface Pro 2 that they never fixed! I have both a 2 and 3... So yesterday I called Microsoft to report the issue and of course the girl who answered had no idea it was affecting all S2s and S3s. She put me on hold and tried at least 2 S3's that they have there in the callcenter for troubleshooting and she was very surprised to see the issue was happening there too LOL! This is a BIOS issue for sure...the problem is there is no keyboard / mouse wake option in the BIOS. And there are NO WINDOWS SETTINGS that will fix the issue. Its straight hardware... MSOFT needs a major firmware fix.... Not holding my breathe." So, has there been a fix for this as of yet? This post was submitted over 4 months ago, and I see my SP3 with the same issue. Sometimes the screen turns back on a second or two after closing the type cover. It's really ridiculous. I have implemented the Hibernation hack via the Group Policy Editor, but I dont really enjoy having to wait until (in essence) the comp boots up again... Any solution??