OKa-a-a-y: W7x32, or W7x64? And if x64, we are putting PMS into x86, yes? And which version of PMS are we installing?
I have to confess here, that with the comment
All that is left behind is the PS3 Media Server folder and the uninstall file
my overactive imagination is pointing to an uninstall script activating on shut-down.
Where did you get the install file?
Gigabyte H61M-USB3-B3 r2.0, I5-2400 3.10GHz, 4GB RAM; W7HPx64 SP1, PMS 1.90.1, VLC 2.0.3, JRE 7u45 x64 x86, Avast! 7.0.1466