Speakers stopped working

first thing you do is update your audio card or down load a software like(.driver identifier.) its free from google you will see an instruction to opereate that software

Are you using the heaphones jack? The new HP is a laptop? Open Sounds in Control Panel. select headphones.

If you hear the sound on the headphones then the drivers installed correctly and the defect is either hardware - the jack for the headphones is stuck so the internal speakers are no longer activated when you unplug the headphones = the jack will have to be replaced by a shop - or software - you will have to go into the Realtek HD Control Panel and configure the audio outputs correctly = enable or unmute the internal speakers.
The Panel icon can be found in the notification area or in Start > Control Panel.

if the pc runs windows vista they won't work in less they have a power but if the pc runs windows xp try to install the drivers for the speakers here is the download link http://www.user-guides.co.uk/download/free/freedrivers/free-drivers-installing-dell-a215-speakers.html

That happened to my Laptop as well and all I did is reinstalled the audio driver that is included in the package and it actually worked with no problem. If in that case is still happening, try to update the driver after reinstalling it.

It sounds like you need to define the speakers to the PC. Find the icon that controls your Sound Card and dabble with it.

Go to control panel, -> sound -> sound and audio devices ->sound and audio device properties -> check the first tab for, "place the icon on the task bar".

Reinstall the software for the sound system, this should redetect the speakers properly as 5.1 surround sound speakers.

If you do this and it still doesn't work then the speakers are bad and your sound system would need to be replaced.

in the bios because you set HD audio to audio it may be that you need to download the HD Audio driver from microsoft

put your hand on chip of your sound card on board if its hot so sure you need to disable and buy sound card or replace this chip also check audio jumper on board and try to install windows again and install the driver if u see on task bar sound volume icon check by tested headphone if there is out sound or no i wish i helped u