HP Pavilion 27-inch Displays User Guide 6 - Page 22

Button lockouts Holding down the power button or Menu button on the rear panel for ten seconds will lock out the functionality of the buttons. You can restore the functionality by holding the buttons down again for ten seconds. This functionality is only available when the monitor is turned on and displaying an active signal, and the OSD menu is closed. Contacting support To resolve a hardware or software problem, go to http://www.hp.com/support. Use this site to get more information about your product, including links to discussion forums and instructions on troubleshooting. You can also find information on how to contact HP and open a support case. Preparing to call technical support If you cannot solve a problem using the troubleshooting tips in this section, you may need to call technical support. Have the following information available when you call: ● Monitor model number ● Monitor serial number ● Purchase date on invoice ● Conditions under which the problem occurred ● Error messages received ● Hardware configuration ● Name and version of the hardware and software you are using Locating the serial number and product number The serial number and product number are located on a label under the front bezel of the monitor head. You may need these numbers when contacting HP about the monitor model. 16 Chapter 3 Support and troubleshooting