I have three year old Asus laptop running Windows 11. A month or so ago, it occasionally started failing to draw power from the socket when the laptop is in use. The battery was completely worn out so I took it out and started working without a battery.
Now it began to shut down abruptly even when connected to power supply. I then got a new (non-OEM) battery installed. The power drawing problem did not go away though I had much longer battery life.
I was forced to work on battery and when it is nearly drained, I had to put the laptop to sleep and toggle the power switch. Then it charges the battery. After an hour, when I turn it on, the battery is nearly charged but now it again shows as unplugged and only runs on battery.
Then I took it to a service center who reasoned that it might be related to heat sensors switching off power intake. They performed a general cleaning (remove microfibers and clean some boards with isopropyl). That seemed to resolve the issue completely for a few days. Then it started happening again.
Is this likely to be a faulty adapter (3-year old) or some internal issue with the laptop or something else?
p.s. I work in a place with some voltage fluctuation.
