255% available (plugged in)

I'll look into it, but the computer also turns itself off when I detach the charger when it's on. I have no clue why, but it is unable to read the battery percentage.

 I cant turn on my laptop if it's not plugged in

How come is this a windows problem if windows isn't even loaded when the computer is turned off?

I think everyone is mixing different problems. I have the 255% bug on both of my laptops (different brands) for some years now and yet they both work fine without being connected to the wall. I asked a bunch of friends and their batteries are working fine too.

I'm not saying that some of you don't really have the problems you are reporting, i'm just saying that the 255% bug doesn't seem to be related.

There's a chance that version 1909 isn't related as well. If you google the subject, there are threads open here on microsoft answers since at least 2017 with people having the same battery problems (laptop shutting down when disconnected from the wall). There are also lots of people complaining about the 255% bug online and none of them (the ones i saw) are complaining that their laptops shut down when disconnected from the wall.

I'm having the same problem as well. I cant turn on my laptop if it's not plugged in, and if i unplug it after it's been turned on, it takes a minute or so before it just goes black. When the charger has been in for a bit, the charger light starts blinking on and off every .8 sec or so.

I'd love to hear if there is a fix for this, as it ruins the whole concept of it being a laptop

It is serious because I get that message and the battery is not charging.

Could it also be that the battery is not charging because it has been already over charged? I wonder!

I have the same 255% problem in my HP Pavilion 13 x360 PC. It definitly started when I have installed Windows 10 1909 update two days ago.   Tried many known tests, recepies but all in vain. HP Battery check returns "Unknown". Any help which may be forthcoming will be greately appreciated