HP 402 G1 manual 10Solving Hardware Installation Problems, Computer will not start Cause Solution

Table 7-10Solving Hardware Installation Problems

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

Cause	Solution
Device is not seated or connected properly.	Ensure that the device is properly and securely connected and
	that pins in the connector are not bent down.
Cable(s) of new external device are loose or power cables are	Ensure that all cables are properly and securely connected and
unplugged.	that pins in the cable or connector are not bent down.
Power switch of new external device is not turned on.	Turn off the computer, turn on the external device, then turn on
	the computer to integrate the device with the computer system.
When the system advised you of changes to the configuration,	Reboot the computer and follow the instructions for accepting
you did not accept them.	the changes.
A plug and play board may not automatically configure when	Use Windows Device Manager to deselect the automatic settings
added if the default configuration conflicts with other devices.	for the board and choose a basic configuration that does not
	cause a resource conflict. You can also use Computer Setup to
	reconfigure or disable devices to resolve the resource conflict.
	To access Device Manager in Windows 8, 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. On all
		computers except the USDT, 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.

76 Chapter 7 Troubleshooting without diagnostics