nkzr4

edit..nm my responce....yea that should do it....im suprised that receiver doesnt have a hdmi in...that really blows

Your MoBo doesn't have digital out and the HTB3510/55 doesn't have any surround analog ins.
 
Unfortunately, only the higher end models do sport additional HDMI connection where you could pass audio via GPU / HDMI Audio.
 
If you use you TV as a monitor you could try to pass digital surround audio from your GPU to the TV and then use the ARC to pass it on to the HTB3510/55 control box. But I'm not sure, if / as of which version ARC supports more than two channels.
 
Additionally, check if the HTB3510/55 accepts surround sound via its digital ins (SPDIF / Coax) or if the only way is ARC / Bluray and upscaled Stereo.
 
If it does support it, you'd need something to output digital audio from your pc, e.g. an internal external sound card supporting Dolby Digital Live.

Or you use something like this: https://www.amazon.de/dp/B01N55O5T9/ref=sspa_dk_detail_1?psc=1&pd_rd_i=B01N55O5T9&pd_rd_w=EGjpN&pf_rd_p=00903874-3af0-47e0-8622-ee58087f71cf&pd_rd_wg=n6oPk&pf_rd_r=8VVKHBSQQX72TBF8A4V8&pd_rd_r=05c0b11f-140f-11e9-8793-63ddf097fa6c
 
Though the setup will be kinda yank.

Read this: https://arstechnica.com/civis/viewtopic.php?f=6&t=1209339

10 days late, but the Sound blaster x-fi surround 5.1 pro sounds pretty good. use it in my main setup to upscale 5.1 to 16.2 for music, obviously on a 5.1 setup the audio would be playbacked in true 5.1, it comes with a cd to install the software which includes a graphic eq and all sorts of stuff to mess round with

i really need to read slower lol...yea i edited my post when i looked over the ht specs
thats the reason i would never recommend an all in one set up like that...they always skimp out on some options