Hi all. Like many here I am a previous Surface Pro 3 owner (got in on release day here in Australia) who decided to upgrade to the SB. I sold my SP3 in anticipation of the SB, so been having withdrawal (it has only occured to me recently how useful the pen has become to my work flow). I had a few issues with my order (issue with Authorisation although other items in the same order went through fine, and then Microsoft cancelled it). But finally got it today. So the first time I turn it on it goes straight to the Windows 10 log in page. This is a bit odd as 1) The Surface and Windows has not been set up yet and 2) How could I log in with a user account if there are no user accounts on there? I had a feeling this was a bad sign, but decided to see what I could do. After trying the Administrator account (which is locked out) the Surface book kinda freaks out (screen starts flashing white and black), I get sent back to the Surface start up logo and then manage to get the Windows setup details. Awesome, except everything has defaulted to Singapore. Change it to all be correct and off I go. I set up my account, and get it downloading the updates etc. It takes hours to downlaod the updates, but eventually they finish setting up. The SB restarts, I log back in and all looks good.... for around 30 seconds. After 30 seconds the speakers start this buzzing noise and the SB locks up. Do a hard restart, get back into Windows and all is good for all of 15 seconds. After 15 seconds the screen simply turns off. All I have is total darkness. I try the hard reset again but nothing. ry it another couple of times and then it comes back to life. Then it happens again. This time I can't get it back. I have tried every combo of buttons I can think of but I'm getting no joy. The strange thing is it appears to be on. It is getting hot if I just leave it, I can un-dock the Clipboard and the keyboard lights up. Just no display. I have even tried connecting to an external display and nothing happens. Right this second I am waiting for the battery in it to die (I haven't worked out yet how I can possibly tell, but we'll see) and see if after that it starts normally. In the mean time does anyone have any other suggestions? I am reluctant to send it back to Microsoft since it has taken me song to get it and Microsoft has THE WORST returns policy for such high end devices. Even if the device turns up dead they make you send it back to them, wait 3 weeks while they do an evaluation and then send you a refurbished model. That's simply pathetic. So, anyone HELP!!!!! Thanks all!