Re: XPS 15Z(L511z) sleep-mode problem after Windows 8 upgrade
You will be unable to uninstall the chipset driver, you can only download and run it. You don’t have to install NVidia Stereoscopic 3D driver as this is included in the Video driver. In case you have not updated the NVidia driver, click on the link below to update it:
I request you to change the settings for Windows update. Check the options ‘Notify me’ for windows update and disable automatic update. Whenever there is Windows update for NVidia and Intel updates right click and disable it and update drivers from the support website if it is required.