If one day you start you laptop and find out that the laptop keyboard has gotten slow.Not taking any input , or if it takes it takes a long while to appear.
Computer has gotten slow, programs are taking forever to open , maximize , minimize.You some how go to check the task manager and finds cpu usage around 80 % or very high.
DO nothing else , but remove your laptop battery and start running your laptop on power.
It is very much highly that your laptop batteries are worn out.
It took me a long while to diagnose this issue, so writing it up here, incase someone faces the same problems.