No sound from computor

[Samhall]

I recently bought a new computer and it cant detect any speakers or headphones i plug in.
Ive tried updating and reinstalling the drivers and nothing seems to work it wont even find them.
under device manager in sound and game controllers it says i have NVIDIA HD audio and under system stuff it says i have two HD audio controllers none of them have any yellow warning signs although under other devices there are two unknown devices but they are still there when i unplug my speakers so i dont think its them.
I have a ASUS F2A55m motherboard and ONBOARD 8CHANNEL (7.1) HIGH DEF AUDIO sound card
ive been trying to get it working for days so any help would be appreciated.

 

[vanthus]

Make sure the correct device is set as default in sound panel.
Right click on the sound icon on right of task bar/select playback devices,
or go to control panel/sound/select "playback tab"/
right click device/set as default device/apply.

 

[Samhall]

Tried that but the only two things there were unplugged hdmi plugs, no devices and i tried looking for disabled devices nothing as well.
im gonna buy a cheap sound card to see if my onboard audio failed, thanks for the reply btw.

 

[vanthus]

Tried that but the only two things there were unplugged hdmi plugs, no devices and i tried looking for disabled devices nothing as well.
im gonna buy a cheap sound card to see if my onboard audio failed, thanks for the reply btw.

Looks like a driver problem.
as you say you have already tried reinstalling drivers I would advise you give PCS a call,if that's where you purchased the computer.