Hello, my emachine is sick i need instructions on how to restore pc back to factory settings
More aboutsick desk
Use the provided recovery disk and set to restore. Make sure to take an aspirin so you don't contract the disease. :-p
Some system don't ship with recovery disc but have a partition with an image of the system. If your system is like that. Once you power on the system it will ask to press a certain key to restore system.
If I were you I would keep an XP-SP3 ISO ready, since you have the OS key on the machine, a fresh install is something I prefer better than system restore.