Hi,
Try the following.
Shut down the notebook, unplug the AC Adapter and then remove the battery. Hold down the Power button for 30 seconds. Re-insert the battery and plug in the AC Adapter.
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.
When windows has reloaded, open the 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.
Restart the notebook again.
When windows has fully reloaded, open windows Control Panel, open Device Manager and open up Sound, Video and Game Controllers. Right click the IDT device and select Properties. Click the Driver tab and then click 'Update driver'. Select 'Browse my computer for driver software' and then select 'Let me pick from a list of device drivers on my computer'. Left click 'High Definition Audio Device' once to highlight it and then click the Next button to install it.
Has this made any difference?
Regards,
DP-K