I have a psu dying on an old Pavilion 7850. The replacement part is HP
proprietary and listed as a 180W MATX on several sites. Is it possible
to buy a generic case with 300+ W psu and move the components into that
or does this HP model absolutely require only this specific power
supply. Some sites have mentioned a proprietary 4 pin mobo connector,
possibly for video. Any ideas?

This is the recommended replacement as far as I can tell



http://www.usereasy.com/product_6286.html