Hello this is really annoying and I have fixed it in the past by taking out the battery for a while then putting it back in, My ASUS N56VJ will not charge I plug it in and Windows tells me its plugged in but not charging and ADIA64 gives back the same results that its 96% not charging
Might be your charger or the battery might be failing
buy a battery from amazon if it still has issues return it. Also check the leads on the battery and pc for corrosion or film. Go into device manager and check the battery section for issues.
Nevermind Guys I did some research and on newer laptop if it is at 100% for long enough it the charging circuit will let the battery dip to to as low as 90% before starting to charge again the point is staying on 100% charge for to long shortens the life of your battery so it is just a mechanism to prolong the life of your battery