Description of the Problem:
Laptop model: Acer Swift 3 OLED, Intel i5.
Step-by-step issue history:
First issue (started about a month ago):
Whenever the charger was unplugged while using the laptop, the screen would suddenly become extremely dark (almost black).
The laptop was still running, but the screen became so dim that it was nearly unusable.
Sometimes it recovered automatically after about 10 minutes, but most of the time a restart was required to bring the screen back to normal brightness.
Recent issue (after sudden shutdown):
While using the laptop normally, the charger was accidentally removed, and the laptop shut down immediately.
When turning it on again, it displayed a message:
“Upgrade process has been suspended. Please make sure AC adapter is plugged in and battery capacity is more than 25%.”
Since then, the laptop only works when connected to the AC adapter and shows 0% battery even after charging for more than an hour.
Unplugging the charger instantly shuts down the laptop.
Request:
Please check if this is due to a battery failure, power circuit issue, or BIOS/firmware problem.
Kindly advise if the solution requires battery replacement, power management repair, or BIOS reprogramming.
