Have you tried not using your surge protector? I once spent 3 days taking apart a PC I built that kept shutting down and it was the surge protector all the time.
I saw a thread about loose jacks too
http://forums.anandtech.com/showthread.php?t=2175019
And these about intermittent charging :
http://answers.yahoo.com/question/in...8204617AAQQiZG
http://answers.yahoo.com/question/in...5154426AADd0Vf
http://www.transformerforums.com/for...-charging.html