No audio device Installed

[ira jeme]

I m using hp 450 Processor intel pentuim cpu 2020M @ 2.40ghz
the bluetooth device is working as a sound driver, the hd audio device is hidden in the device manager. it says the hardware is currently disconnected. and i've tried installing may hd audio driver but none of them are working. when i uninstalled the bluetooth it says no speakers or headphones are plugged in.
please help me out

 

[fireberd]

First, verify the sound is enabled in the BIOS. If that is OK, reinstall the Intel Motherboard Chipset Drivers (even if Intel says they are installed) then restart the PC and see if Windows detects the sound.

If the hardware is working OK, and the correct hardware drivers are not installed, Windows will install the generic, basic function, High Definition Audio drivers.

If the sound is still not working, either a Windows OS problem or a hardware problem with the motherboard and/or sound chip.
If its Windows, you will have to do a complete reinstall.