Thanks for your help. Some how you are correct. I was using a 90w ac adpter. When I replaced it with 130w ac acadpter
I did the following after that;
1.reset the rating
2. it hangs when submitted to recalculate the index experience rating
3. rebooted the laptop and restrated in safemode
4. shutdown again and restarted in normal mode
Now it is fine. Thanks again.
Another issue when leave it idle for a long time arround 20-30 mins, it hang my laptop.
Trackpad and keyboard not working but I observerd that I can increase or decrease the contrast from keyboard.
Do you have an idea what could be the problem?