You may need to “find a friend”, nearby who has a working PC, preferably with the same OS as you have. Using their PC, download some utilities (anti-virus and diagnostic), and create a clean boot disk (CD or DVD) or a boot USB drive. Then using that boot cd or boot drive, reboot your computer and run the utilities. This is one reason why I have multiple computers - all running the same OS.
After loading that other (SLAVE) machines backup onto my main (MASTER) machine, I was able to boot into ‘SAFE MODE’ delete all the wrong drivers and install the correct drivers.
I am seriously considering purchasing two of the latest and greatest AMD processors and motherboards and keeping both systems in sync both hardware and software wise to make last ditch emergency recoveries like I just did much easier without having to contend with the driver problems.
The only problem is that there are some internal MAC serial numbers, machine names and other identification which appears on the network making a complete and final reload impossible without further tweaking.
The absolute best solution is to make backup image copies and keep them in a secure location. It is best to keep them on a DVD and a special secure partition on the computer they are created on.