No drivers for Conexant High-Definition (HD) SmartAudio

don't update your laptop.....kindly turn off all windows update...
uninstall all audio, hd modem, and UAA bux driver for high defination driver in system device....restart your lpatop..go to hp.com and search following no. for modem driver-(sp33442), for audio driver(sp35270), for UAA driver (sp32395), download and install...
and install drivers follow these steps:

Open device manager and right-click on Audio device on High definition Audio Bus.
Select Install from a list of specific location (Advanced) Click Next
Select Don’t Search. I will choose the driver to install.
Select Sound, Game & video controller from the list of Hardware type
Click on Have Disk
Click on Browse and navigate to C:swsetupsp35270 and click on .ini file OK
Click Next
It will give you an update driver warning message. Click on yes.
It will start installing the driver
Click on Finish..

I hope your problem is solve now.......