Sorry for my lack of response...but when I run out of ideas, I just sit back and wait for someone else to throw out their own ideas.
System manufacturer and model? All the drivers that you need for this system...should be available at the respective website of the system manufacturer.
I can't suggest anything other than what I have already...but I will make the comment that...there is no need to update drivers which are properly working.
I've never understood why users resort to a 2-stage approach (install another program, which, in turn, is supposed to install drivers perfectly) when installing drivers is a 1-stage operation (user downloads driver, installs).
But I don't believe that any driver needs to be "updated" simply because a more recent driver has been produced.
Consequently, I recommend that users take the same approach to "updating drivers" as they should take to suggestions made by well-intentioned persons regarding "updating the BIOS"...don't, if the system and system functions are working properly
In the event of functions which aren't working properly...my tactic is to simply uninstall all drivers for said function...ensure that I have the proper driver for my system and the system function...and then install same.
I go to Device Manager...scroll down the list until I find the function (in your case, Sound, Video, & Game Controllers...double-click on anything looking like the device (AC 97)...select the Driver tab...and click Uninstall. I never select Update because I don't believe that drivers always update properly when files are damaged. I uninstall...then I normally reboot the system.
If I get prompted by Windows for a driver upon reboot, I ignore it. I let the system settle, then install the driver files.
A guide has been prepared, note that I don't do it the way suggested...but I don't have driver problems
How to update a Windows hardware driver - http://www.bleepingcomputer.com/tutorials/how-to-update-a-windows-hardware-driver/
<<I did not install TeaTimer, yet it is still running in Windows Task Manager.>>
Well, someone installed it. It's part of the default installation package and users must elect not to install it.
More info on how it starts and how to stop it.
FWIW: Monitors normally don't require drivers from an external source.
Hope this helps