After a machine is returned, the manufacturer makes a full repair and resells the computer as refurbished. Or the equipment might be returned with cosmetic problems, such as a tower bearing a small scratch or a monitor with scuff marks. These are also classified as refurbished products. If possible, find out if the computer was defective before it was refurbished. Certain parts may be less stable after refurbishment.
Monitors are one example.
If possible, do not buy a monitor that has been refurbished. Buy from an authorized dealer with a good reputation. Contact your local Better Business Bureau for information on computer stores in your area. Know what you're buying. If you're unfamiliar with computer parts, consult a computer glossary.