I've downloaded a program that detects the autoruns on my system. I deleted some autorun processes from my system and now some good features of Windows have disappeared. More important than all of them right now is that I want to restore my system to factory.
This however gives me the error:
[The boot selection failed because a required device is inaccessible 0xc000000e]
I then tried to use the backup DVDs, but Windows doesn't boot from the CD. When I select "boot from internal CD/DVD" it directs me to Windows.