If your computer does not power on with the AC adapter connected, this would indicate a problem with the AC adapter, or with the DC jack on the computer itself. If you are sure the AC adapter is functioning properly, then the problem would be with the DC jack, and the computer would require service. If your computer requires service, please contact Acer Technical support to set up repair.
Own a Predator Laptop? Then I bet you have learned a thing or two from beststevie. He has been helping out in this forum for quite a while and it's about time we recognized him for it. Thanks beststevie!