Well, the directions for doing a system restore don't need to "go into great detail" as it's a fairly simple procedure.
I doubt you've turned it back to 2004 though. The restore points wouldn't go back that far unless you haven't used the PC for 5 years! They get deleted and replaced automatically on a regular basis to keep within the allocated disk space.
If you have a set of restore discs, try using those to put the computer back the way it was when new, then Windows should start normally. You'll have to create an account for yourself after that. You will also lose everything that you saved in "My Documents", and you'll have to re-install any software that you added after buying the PC.
Edited by pip22, 04 March 2007 - 11:52 AM.