Has anyone converted theirs into a HTPC?
I connect my HP MS (HD5450) to Amp - TV via HDMI and use it as a Plex server and client. I have Rasplex as a client but it is too clunky and slow in menus, even overclocked.
I like how I can stream straight from the HP to TV without any issues at 1080p inc DTS-MA etc so want to lose Rasplex.
Only issue I have is that I cannot get it to bootup and go straight into Plex front end. I am using WHS2011 which might be the problem but not sure which other OS will work well.
I think you might be referring to the Gen7 MS but I personally wouldn't use the Gen8 as an HTPC becuase it's simply too loud. On the Windows front I've seen this thread: https://forums.plex.tv/index.php/topic/98332-home-theater-autostart-with-windows/ (but I'm not sure if this is relevant to WHS, and I've just seen the same question asked in the thread - is this you?).
Personally I am a huge fan of using the Pi & RasPLEX along with the mobile clients so don't need anything more powerful. That said I didn't think it was possible, or recommended, to use the PMS machine as the client at the same time.