After powering down my Surface Pro 3, it will not turn on by pressing the power button. I have the latest firmware that came out in July installed. The only way for me to get it to power back on is by disconnecting the type cover and holding the power and volume up buttons for 12 seconds. Any one else seeing this? According to the attached link by Paul Thurrott, this was a known problem earlier and was supposed to be fixed: http://winsupersite.com/mobile-devices/surface-pro-3-when-bad-things-happen-good-tablet