1st Issue
-After installing the windows some time the battery will not charge to 100%.
Resolution
-for win 7 install lenovo Energy management and enable the battery full charge mode.
-For win 8 install one key optimizer and disable the conservation mode.
-Issue will resolved.
2nd Issue
-Some time the Web camera will not work.
Resolution
-Update all the drivers from support.lenovo.com.
-Issue will resolved