Video driver install not working on VPCZ133GX

I have a VPCZ133GX that was factory load with really not much messed with. SP1 for Win7 x64 fails to install, ultimately failing when it's doing whatever it needs to in order to process hdaudio.inf

I've tried a lot of things, and right now I'm at the point where I uninstalled the Nvidia drivers and Realtek drivers from add/remove programs. I was able to get the audio re-installed only after I disabled/uninstalled the High Definition Auido driver in Device Manager/System Devices (found this only).

I'm trying to get the video re-installed but it does nothing. All the non-working drivers in device manager says that it requires an "interactive window".

Is there some special way to re-install these drivers? Anyone know how I can get SP1 to install and work out this hdaudio.inf issue?

 

Get the drivers from here:
http://forum.notebookreview.com/sony/342947-my-discoveries-vaio-z-s-hybrid-graphics.html

I recommend the second one in the list - 263.14/2266 - that's the one I use myself.

 

That driver from Andrew08's says it's signed and you don't need to do the signing step. Does that mean I don't need to keep the computer in test mode forever?

 

Well, this fails to install the hybrid graphics driver, so not getting very far with this either

 

If you read the instructions in the thread - I have to admit it is a very long thread - you will find that the old drivers need to be uninstalled first - completely. You may need to disconnect from the internet while you do this to prevent Windows from helpfully downloading a driver it thinks will work. Do not attempt to install the new driver until you see two instances of standard VGA compatible display adapters in device manager, one of which will have an exclamation mark saying it has a problem.

This is not straightforward - sometimes you get a black screen and have to finish the uninstall 'blind', i.e. wait 3 to 5 minutes until you are sure it is done uninstalling, and then press the Enter key to reboot (you have to imagine the dialog you get after uninstallation is complete). Alternatively you could selectively install the VGA compatible driver using the update driver tab of the display adapter properties dialog.

Now run DriverSweeper or Nasty File Remover (nfr.exe) to get rid of any nVidia driver files that might still be lurking in your system - this is important, especially for the nVidia control panel.

Now you can install the new driver.

 

I've gone the uninstall and manual update driver route, still no luck. I uninstalled the original drivers via add/remove program last night and that got rid of control panel, or so it seems. Maybe there is some stuff left behind. I'll drive driversweeper and nasty file remover as a last resort.

I'm not sure any of this will resolve my Win7 SP1 issue with the hdaudio drivers. Not sure if that's from the video chipsets or the realtek chipset that's causing the failure. So I may end up with a factor restore at this point.