Hi there-I replaced a dead battery with a non-Dell supplied battery. Unfortunately, I have had issues since replacing the battery with the 3 & 5 keys requiring several attempts before working. Have taken apart the laptop several times to make sure I didnt screw anything up but other than reseating the keyboard cable I haven't done anything else. Oddly, I loaded up Ubuntu on a Live disk and didnt seem to have any of the keyboard issues. The normal OS in W11, latest release

I have also had bizarre power related issues. If shut down & unplugged, when I plug it back in it powers on.  When powered on and it goes to sleep due to inactivity it will not start up again, with the screen staying dark, even though the keyboard lights are illuminated.  I have to hold the power button down for about 10-15 seconds and then it reboots.   

Any thoughts/suggestions would be greatly appreciated as always.

Thank you 

Roger