i have an acer laptop. up until yesterday it has been fine. but yesterday when i would turn it on the screen would be a little dark and then after a minute it would return to normal. i look at the battery icon on the bottom of the screen and it showed 90% available but that is with the power cord plugged in. one time i look and it says remaining power the next time it says it is plugged in, charging.
could it be the power cord/charger?