|Most more recent computers will not start up on the AC adapter alone, and won't start up with the AC adapter connected if the main battery has less than a minimal required charge. Your main battery is probably not charged up enough. Plug in the AC adapter for a while, then the main battery should be charged up enough for it to start up. |
If that doesn't help........
See response 1 in this:
Correction for that:
The jack in the laptop should move when you wiggle the plug in the jack.
should have been
The jack in the laptop should NOT move when you wiggle the plug in the jack.