1. Lower the display resolution for the current application or consult
the documentation that came with the application for suggestions
on how to improve performance by adjusting parameters in the
application.
2. Add more memory.
3. Upgrade the graphics solution.
Some software applications, especially
games, are stressful on the graphics
subsystem.
Restart the computer.Cause unknown.
System does not turn on and the lights on the front of the computer are not
blinking
Use this information to troubleshoot the computer.
SolutionCause
Press and hold the power button for fewer than 4 s. If the hard drive light
turns white:
1. If the computer has a voltage selector, check that the voltage
selector (located on the rear of the power supply) is set to the
appropriate voltage. The proper voltage setting depends on your
region.
2. Remove the expansion cards one at a time until the 5V_aux light on
the system board turns on.
3. Replace the system board.
OR
Press and hold the power button for less than 4 s. If the hard drive light
does not turn white:
1. Check whether the unit is plugged into a working AC outlet.
2. Open the access panel and check that the power button cable is
properly connected to the system board.
3. Check that the power supply cables are properly connected to the
system board.
4. Check to see if the 5V_aux light on the system board is turned on. If
it is turned on, replace the power button assembly.
5. If the 5V_aux light on the system board is off, replace the power
supply.
6. Replace the system board.
System unable to power on.
Solving power problems
These tables provide common causes and solutions for power problems.
Power supply shuts down intermittently
Use this information to troubleshoot the computer.
54
Chapter 5 Troubleshooting without diagnostics
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