Yes is so sad. I had that problem one yesr ago ine I bought the surface pro, nothing solved the problem. No firmware uldates worked, nothing. Then I contacted support vis chat and they sent me a new one and after I received the new one, with the RMA I returned
the bad one, of course, to return the bad after receive the new one they asked me a card but nothing was charged, just was the procedure.
But this not finish here, after receive the new one, the problem wasn’t like the returned surface, the returned surface almost each 30 minutes it turned off. The new one made some random shut downs during the day, I could work more, but then I applied the
same updates Immade to the retruned surfsce pro (in settings of surface pro) and since that day I never had the problem again is incredible stable, is my main computer and never turns off hehe, incredible, like I disabled screen protectors and auto sleep,
sometimes I forget to turn off and I leave all night like that but still on.
I think the problem is software and hardware. If updates not work, then you need to return. If mine worked with the uodates of almost one year ago, it means for this bug, must be solved with the updates of almost one yese ago, if is up to date the surface
and still turning off then nomither wat, but return.