HP dc7608 manual Troubleshooting Without Diagnostics

			Troubleshooting Without Diagnostics
Solving Minor Problems (Continued)
Problem	Cause	Possible Solution
Poor performance is	Program previously	Restart the computer.
experienced.	accessed did not release
(continued)	reserved memory back to
	the system
	Virus resident of the hard	Run virus protection program.
	drive.
	Too many applications	1.	Close unnecessary applications.
	running.	2.	Add more memory.
	Some software	1.	Lower the display resolution for
	applications, especially		the current application or consult
	games, are stressful on the		the documentation that came with
	graphics subsystem.		the application for suggestions on
			how to improve performance by
			adjusting parameters in the
			application.
		2.	Add more memory.
		3.	Upgrade the graphics solution.
	Cause unknown.	Restart the computer.
Computer powered off	Processor thermal	1.	Ensure computer air vents are not
automatically and the	protection activated:		blocked and the cooling fan is
Power LED flashes Red	A fan may be blocked or		running.
two times, once every	not turning.	2.	Open hood, press power button,
second, followed by a	OR		and see if the processor fan
two second pause, and
	The heatsink is not		spins. If not spinning, make sure
the computer beeps two
			the fan's cable is plugged onto
times. Beeps continue	properly attached to the
			the system board header. Ensure
for five iterations after	processor.
			the fan is fully/properly seated or
which the LED flashes
			installed.
will continue until the
		3.	Replace the processor
problem is resolved.
			heatsink-fan assembly.
		4.	Reseat processor heatsink-fan
			assembly and verify that the fan

is properly connected to the system board.

Service Reference Guide, dc7600 390742-002 D–3