Okay, I did follow the tutorial for the paper clip trick and nothing happens.
So am I correct in thinking that it is in fact the power supply that has gone bad and needs to be replaced?
If that is the case, now all I need to do is to find another psu that will fit into that tight space. I did come across a few sites that do list that they have a power supply unit for the HP Pavilion 7865.http://www.911forpcs.com/7865.htmlhttp://www.highpowersupply.com/sfx300w.html#cp
and the one at http://www.xoxide.com/arrow-matx-300w-psu.html
looks just like the one that is in there now and they do list that it will work with HP but I would need to contact them first just to be sure that it is in fact compatible with the HP Pavilion 7865.
Or is there something else that I need to be looking at for my replacement psu?
Thanks Again for all the assistance.