HP Pavilion zv5360us won't power up with or without battery installed?

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http://www.linuxquestions.org – This notebook's owner is my sister. She said to me that she found some ants walking through/on it a few times and she took them out of the way by using a small piece of clean cloth. The last time that happened it gave her trouble to turn it on. After that instance it never turned on again. After some days she took it to CompUSA for a diagnostic but they told her it was damaged beyond repair; the Power Supply never got back from the place... I took it home to check it further and am forced to use another hp notebook's Power Supply which doesn't give as much power out as the original o (HowTos)