User manual HP H8-1518EF

[. . . ] The information contained herein is subject to change without notice. The only warranties for Hewlett-Packard products and services are set forth in the express statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. [. . . ] For more information or for additional troubleshooting options, see Getting information on page 1. Press the Ctrl+Alt+Delete keys on the keyboard simultaneously. Click the Arrow button next to the red Shut Down button, and then click Restart. Or, press and hold the Power button on the computer for 5 or more seconds to turn off the computer, and then press the Power button to restart the computer. Contact Support, whether it was possible or not to start up Windows. Either the hard disk drive or the system board may need to be replaced. Ensure that the cables connecting the computer to the external power source are plugged in properly. When the cables connecting the computer to the external power source are plugged in properly, and the wall outlet is functioning, the green power supply light on the back of the computer should be on; if it is not, contact Support. If the display (monitor) is blank, the monitor might not be properly connected. Connect the monitor to the computer, plug it in, and turn it on. Test the wall outlet by connecting a different electrical device to it. Computer does not start 11 Symptom Computer seems to be locked up and is not responding. Possible solution Use the Windows Task Manager to close any programs not responding, or restart the computer: 1. Press the Ctrl+Alt+Delete keys on the keyboard simultaneously. Select the program that is not responding, and then click End Task. If closing programs does not work, restart the computer: 1. Press the Ctrl+Alt+Delete keys on the keyboard simultaneously. Click the Arrow button next to the red Shut Down button, and then click Restart. Or, press and hold the Power button on the computer for 5 or more seconds to turn off the computer, and then press the Power button to restart the computer. error message: Invalid system disk or NonSystem disk or Disk error. When drive activity stops, remove the disc and press the spacebar on the keyboard. 12 Chapter 5 Troubleshooting Power Symptom Computer does not turn off when the Power button is pressed. [. . . ] click Start , All Programs , PC Help & Tools , and then click Hardware Diagnostic Tools. For help online, go to the HP Customer Care Center website at http://www. 20 Chapter 6 Support information Phone assistance to get you up and running is covered for thirty (30) days from the time you purchased your computer. After thirty (30) days, there may be a charge, but the helpful support is still available. [. . . ]