send it on warranty or go to local pc service. i had similar problem with power/charging unit. it didn’t charge battery and didn’t work on power plug, but it did work on battery when it was charged outside unit. they told me it was faulty power/charging unit (didn’t switch between batt and dc), they fixed it for a small price. or maybe it’s faulty battery? it shows 100%, but have no power. when my 1st batt was dead ezbook turn off just after i took power cable out, even when charged to 100%.