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8 Diagnostics and Minor

Troubleshooting

Calling support

At times you might encounter an issue that requires support. When you call support:

●

Have the computer readily accessible.

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Write down the computer serial numbers, product numbers, model names, and model numbers

and have them in front of you.

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Note any applicable error messages.

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Note any add-on options.

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Note the operating system.

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Note any third-party hardware or software.

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Note the details of any blinking LEDs on the front of the computer (tower and desktop

configurations) or on the side of the computer (all-in-one configurations).

●

Note the applications you were using when you encountered the problem.

NOTE: When calling in for service or support, you might be asked for the product number (example:

PS988AV) of the computer. If the computer has a product number, it is generally located next to the 10-

or 12-digit serial number of the computer.

NOTE: On most models, the serial number and product number labels can be found on the top or

side panel and at the rear of the computer (tower and desktop configurations) or on a pull-out card on

the side of the display (all-in-one configurations).

For a listing of all worldwide support phone numbers, go to http://www.hp.com/support, select your

region, and click Connect with HP in the upper-right corner.

Calling support

Questions and Answers:

Need help?

Do you have a question about the HP Z420 Series and is the answer not in the manual?

HP Z420 Series Specifications

General

Chipset	Intel C602
Memory Slots	8 DIMM slots
Networking	Integrated Intel 82579LM Gigabit Ethernet
Processor Options	Intel Xeon E5-1600 and E5-2600 series
Graphics Options	NVIDIA and AMD professional graphics cards
Power Supply	600W 90% efficient, wide-ranging, active Power Factor Correction (PFC)
Form Factor	Convertible Mini-tower