RE: Blue screen problem caused my pc to shut down unexpectedly!
You should say what condition the computer is in now. Can you boot to windows? Blue screens are caused by bad drivers, hardware failure as well as other failures. In your case the new drivers are probably the culprits. If you can boot to windows, open device manager and rollback those new drivers to the previous ones. Explain why you were installing new drivers and maybe someone can help with the original problem.
It is important to always say your model computer as well as the operating system when posting here. If you have a laptop, drivers are customized by Dell for your exact model and you should not install drivers from any other source.