I'm late on this, because I needed some time to investigate this issue on my children's Surface 5 from 2017. I have exactly the the same problem and so the Surface is useless after 2.5 yrs (issues since summer). Is there any chance to get some warranty or help from MS or is the only way not to buy any MS products in the future.
Nope. In my experience and that of everyone else who has commented in this feed, the only help they might offer if you really INSIST is the possibility is to buy a refurbished model of the same 2017 Surface 5 for $600. And to even get that, I had to vehemently argue and insist that this problem even exists. The guy responded that they had never heard of this problem before, so he was offering a great deal that I was not necessarily entitled too. Oh please... The blog feed we are on right here is on their Microsoft's own help forum! For them not to be aware of this would mean that no one at microsoft reads the messages on their help forum. And I've seen this same complaint on many other forums. They simply pretend to have no knowledge of the issue. This is the WORST customer service I have ever experienced!
Do they actually think that we want to spend another $600 for the same useless model that is now three years old anyway? By the way, my machine no longer works even when it is plugged in.
Sorry to rant...
Anyway, I really wish someone would look into initiating a class action suit against them. I can't because I live outside the US.
Good luck!