No audio device installed.

[Ron8622]

I did a complete fresh start for Windows 10 to correct issues I tried repeatedly to repair in normal step-by-step fashion.  My computer is working just fine..except I have no sound.  When I drag the mouse over the speaker icon in the taskbar, the message says "No Audio Output Device is installed".  Upon opening up device manager, scrolling down to Sound, video and

game controllers...and double left-clicking on that listing, IDT High Definition Audio CODEC is listed below.  Doubling left-

clicking says that "No drivers are installed for this device".  Clicking on the driver properties, driver details (C:\WINDOWS\

system32\drivers\ksthunk.sys appears.   When I click up Update Drivers...I get these messages:

Windows encountered a problem installing the drivers for your device.

Windows found drivers for your device but encountered an error while attempting to install them.

A device attached to the system is not functioning.

Please Help!!!

[banhien · Accepted solution]

@Ron8622

Your machine came with Windows 8 pre-installed actually, and no Windows 10 drivers on its support site. Please try the following driver for Windows 10

             http://ftp.hp.com/pub/softpaq/sp63501-64000/sp63555.exe

or later

           http://ftp.hp.com/pub/softpaq/sp70501-71000/sp70509.exe

           http://ftp.hp.com/pub/softpaq/sp71501-72000/sp71717.exe

Regards.

[Ron8622]

Thank you...I will try these suggestions this evening...leaving to visit my mother in her nursing home.  I will reply later as to whether your suggestions worked for me or not. Either way...thank you!!!

[Paul_Tikkanen]

Hi, @Ron8622

Only the last driver (sp71717) is going to work on your model...restart the PC after installing...

[Ron8622]

The last driver works!!  Just have non-working headphones for now...Thank you!!

[Ron8622]

You are right, the last driver works!  Just have non-working headphones.   Thank you!

[Paul_Tikkanen]

You're very welcome.

Yes, unfortunately the headphones no longer work in W10.

Everyone I know of has reported that issue.

One of my speakers of the pair has a headphone jack, so if your speaker has the same thing, try plugging the headphones into that port.