not sure if it's a hardware or software problem. my battery doesn't work. when plugged in, it works as normal, system says everything looks good, it shows as plugged in, but it's not charging (like battery not even there) shows as 5%. i've tried a different os and nothing changed. i've looked in bios and i think it's the "allow usb charging" option (it's a usb c charging port and cable). it's disabled, but when I enable it, it disables itself after i exit bios and idk why. i've also opened it up and checked if a connection might have come loose, but doesn't seem so. it's a lg gram 2021 16" T2ZF0320 firmware. only other thing that i can think of is battery damaged (don't think so, cuz it hasn't been damaged and suddenly stopped working from one day to the next) or something with firmware/drivers