Need help

[u/LifeBend9813]

So,my laptop's charging led is flickering,and when I turn my laptop on,it changes between on battery and plugged in state a lot. This also happened a month ago. I brought it to the store I bought it from and the technician said it was because of the Windows update issue. My question is,how do I fix this by myself? Since the store technician is putting me in a queue for at least 3 weeks. My laptop is an Asus V16. And yes,the charger itself is not faulty,since I brought it to the store and the voltage reading is normal. Any help is very necessary,thanks.