Hmmm seems as if the guy that installed it made sure it always boots with chip on. See if you can find some switch somewhere.
Only other way is to either open the box yourself and take a look or ask the guy that installed it for you how it was installed.
That frontpanel you talk about, let me guess its one of these:
http://www.chipper.se/images/large/w...ket_02_LRG.jpg