HP 1105 manual Computer will not start Cause Solution

Computer will not start.

Cause	Solution
Wrong memory modules were used in the upgrade or	1.	Review the documentation that came with the system to
memory 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.
		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
	3.	Replace third-party memory with HP memory.
	4.	Replace the system board.

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

Cause	Solution
Graphics card (some models) is not seated properly or is	For systems with a graphics card:
bad, or system board is bad.	1.	Reseat the graphics card. Power on the system.
	2.	Replace the graphics card.
	3.	Replace the system board.

For systems with integrated graphics, replace the system board.

106 Appendix A Troubleshooting Without Diagnostics