How do I contact HP for onsite service or technical support?
The HP business support line is 1-800-334-5144 or you may contact HP at 1-800-633-3600, 24 hours a day, 7 days a week for most products. For HP and Compaq products warranty and out of warranty questions and support, please call HP at 1-800-474-6836 (1-800-HP INVENT). For additional ways to contact HP for support, please visit HP’s website.