Blink or beep codes: Interpreting POST diagnostic front panel LEDs and audible codes

If you see flashing LEDs on the front of the computer or if you hear beeps, see the Maintenance and Service Guide (English only) for interpretation and recommended action.

HP Support Assistant

HP Support Assistant is an application that helps you maintain the performance of your computer and resolve problems through automated updates and tune-ups, built-in diagnostics, and guided assistance. HP Support Assistant is preinstalled on all HP or Compaq computers with Windows 7.

To access HP Support Assistant in Windows 7, double-click the HP Support Assistant icon on your desktop.

Using HP PC Hardware Diagnostics

If HP Support Assistant is unable to detect a problem, try the UEFI-based hardware diagnostic solution that HP includes on all products. You can use this tool even if the computer will not boot to the operating system. This tool also works with components not diagnosed in HPSA.

Why run HP PC Hardware Diagnostics

The HP PC Hardware Diagnostic tools simplify the process of diagnosing hardware issues and expedite the support process when issues are found. The tools save time by pinpointing the component that needs to be replaced.

●Isolate true hardware failures: The diagnostics run outside of the operating system so they effectively isolate hardware failures from issues that may be caused by the operating system or other software components.

●Failure ID: When a failure is detected that requires hardware replacement, a 24-digit Failure ID is generated. This ID can then be provided to the call agent, who will either schedule support or provide replacement parts.

How to access and run HP PC Hardware Diagnostics

You can run the diagnostics from one of three places, depending on your preference and the health of the computer.

1.Turn on the computer and press Esc repeatedly until the BIOS Boot Menu appears.

2.Press F2 or select Diagnostics (F2).

Pressing F2 signals the system to search for the diagnostics in the following locations:

a.A connected USB drive (to download the diagnostics tools to a USB drive, see the instructions in Downloading HP PC Hardware Diagnostics to a USB device on page 4)

b.The hard disk drive

c.A core set of diagnostics in the BIOS (for memory and hard disk drive) that are accessible only if the USB or hard disk drive versions are not detected

Downloading HP PC Hardware Diagnostics to a USB device

1.Go to http://www.hp.com.

2.Click the Support & Drivers link.

3.Select the Drivers & Software tab.

4.Enter the product name in the text box and click Search.

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Chapter 1 Getting Started in Windows 7