Hi, does anybody know anybody who would be able and willing to TRY to see what is a hardware problem with a Stream 8 5901CA tablet? 
It started to upgrade Windows 10 version 1709 to 1803 and did not have enough memory and needed external drive, and with the external USB it took very long time during whihc the battery drained. So I tried an adaptor that had two connetions, USB and C (used for a charger) and it killed the tablet.
I will not boot (turn on) now.
HP says that they cannot do any service on it as it is obsolete, whatever I was willing to pay ...
I know that it should show the charging pictogram on the display for a few seconds, as it always did, until this Sunday.
So now, when I plug the original charger (or a diffent one), the pictorgram does not show up. I tried that multiple times. I know that it is a very old and discontinued tablet, but there is nothing like that (8" format in Windows 10) on the market ...
Yes, based on past experiences of others here with the Stream, the lack of the charging pictogram unfortunately indicates that something on the mainboard is defective. I am not sure if a replacement mainboard would be available or if it would be worth it to fix it. You might just try to find a used Stream 8 for sale online. Hopefully there is no data on yours that you need to save.