Hi Vink,
Try the following.
Download the IDT Audio installer on the link below and save it to your Downloads folder.
http://ftp.hp.com/pub/softpaq/sp59501-60000/sp59542.exe
When done, open windows Control Panel, open Device Manager and open up Sound, Video and Game Controllers. Right click the IDT device and select Uninstall - you should also get a prompt to remove the current driver, tick the box to allow this and then proceed with the uninstall.
When complete, hold down the shift key and click shut down to close the notebook - this will avoid 'hybrid boot'.
Tap away at the esc key as you start the notebook to launch the Start-up Menu and then select f10 to enter the bios menu. Press f5 to load the defaults ( this is sometimes f9, but the menu at the bottom will show the correct key ), use the arrow keys to select 'Yes' and hit enter. Press f10 to save the setting and again use the arrow keys to select 'Yes' and hit enter.
Let Windows fully load - it will automatically load an audio driver, but just let this complete.
Now open windows Control Panel, open Device Manager and open up Sound, Video and Game Controllers. Right click the entry Intel(R) Display Audio and select Uninstall
When this has completed, download and reinstall the chipset driver on the following link.
Again, when complete, hold down the shift key and click shut down to close the notebook.
Start the notebook and let Windows fully reload. Then open your Downloads folder, right click on the IDT installer and select 'Run as Administrator' to start the installation.
Do you still get the same error?
Regards,
DP-K