Can you share with us what update is giving you the problem?
I have run Vista Home Premium for a year and a half on my Dell quad machine. The system came with Vista installed. About 3 weeks ago, after a Windows Update, I started getting the "Windows is installing a driver" pop up notice and then it comes up with the unable to install driver notice. I then get the pop up asking me what I want to do but it is only visible for a few seconds. It disappears on its own and the installing driver notice pops up again. It runs in a continuous loop. I have checked the "dont tell me again" option but it gets ignored. When I click the unable to install driver window to find out what is causing the problem, it says "device unknown". I checked Device manager and there are no Exclamation Marks shown on any of my devices.
I rolled back the system to a restore point prior to the update and all was well until a few days later when the next update ran and the problem re-occured.
This time I ran System File Checker and that stopped the pop ups but I still got the sounds associated with the pop ups so I turned them off too.
Yesterday, another update ran and the problem is back.
I have been all over the internet looking for an explanation but I can't find anything.
Any help offered would be greatly apprciated.