Missing Audio and Video

[plutomaniac]

Most probably you uninstalled drivers, that's why. You need to reinstall your graphics and sound card drivers. Maybe more, I have no idea what you deleted and how you did so.

1) What graphics card do you have?
2) Is it a laptop or a desktop? What model?
3) What operating system do you have? Also 32bit or 64bit?

If you don't know about 1 and 3 go to start and type dxdiag. It should be there under tabs System,Display and Sound.