Table 8-1Solving Hardware Installation Problems (continued)

A new device is not recognized as part of the system.

Cause

Solution

 

 

 

To access Device Manager in Windows 7, click Start, select

 

Control Panel, and then select Device Manager.

 

To access Device Manager in Windows 8.1, from the Start screen,

 

type c, select Control Panel from the list of applications, and then

 

select Device Manager.

 

 

USB ports on the computer are disabled in Computer Setup.

Run the Computer Setup utility and ensure that Device available

 

is selected for appropriate USB ports under Security > USB

 

Security.

 

 

 

Computer will not start.

 

 

 

 

Cause

Solution

 

 

Wrong memory modules were used in the upgrade or memory

1. Review the documentation that came with the system to

modules were installed in the wrong location.

 

determine if you are using the correct memory modules and

 

 

to verify the proper installation.

 

 

NOTE: DIMM1 or XMM1 must always be installed. DIMM1

 

 

must be installed before DIMM2, and DIMM3 must be

 

 

installed before DIMM4.

 

2.

Observe the beeps and LED lights on the front of the

 

 

computer. Beeps and flashing LEDs are codes for specific

 

 

problems.

 

3.

If you still cannot resolve the issue, contact Customer

 

 

Support.

 

 

 

Power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. (Beeps stop after fifth iteration but LEDs continue flashing.)

Cause

Solution

 

 

Memory is installed incorrectly or is bad.

CAUTION: To avoid damage to the DIMMs or the system board,

 

you must unplug the computer power cord before attempting to

 

reseat, install, or remove a DIMM module.

 

1.

Reseat DIMMs. Power on the system.

 

2.

Replace DIMMs one at a time to isolate the faulty module.

 

 

NOTE: DIMM1 or XMM1 must always be installed. DIMM1

 

 

must be installed before DIMM2, and DIMM3 must be

 

 

installed before DIMM4

 

3.

Replace third-party memory with HP memory.

 

4.

Replace the system board.

 

 

 

188 Chapter 8 Troubleshooting without diagnostics

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HP 705 G1 manual Computer will not start Cause Solution
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705 G1 specifications

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