I have an Aspire ES1-512-P8NA laptop. When it is connected to an external power supply, the battery meter has recently started indicating that it is plugged in but not charging. The amount of charge seems to be stuck at 95%. I've read a number of articles and posts suggesting fixes which involve removing and then replacing the battery, but this model does not allow that - the battery appears not to be accessible from the exterior of the computer. Is there any other way of tackling this problem?