Troubleshooting Without Diagnostics
Problem | Cause |
| Solution |
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| Some software | 1. | Lower the display resolution for the |
| applications, especially |
| current application or consult the |
| games, are stressful on the |
| documentation that came with the |
| graphics subsystem. |
| application for suggestions on |
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| how to improve performance by |
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| adjusting parameters in the |
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| application. |
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| 2. | Add more memory. |
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| 3. Upgrade the graphics solution. | |
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| Cause unknown. | Restart the computer. | |
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Blank screen (no video). | Monitor is not turned on | Turn on the monitor and check that the | |
| and the monitor light is | monitor light is on. | |
| not on. |
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| The cable connections are | Check the cable connection from the | |
| not correct. | monitor to the computer and to the | |
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| electrical outlet. | |
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Blank screen (no video) | You may have a screen | Press any key or click the mouse button | |
(continued). | blanking utility installed or | and, if set, type your password. | |
| energy saver features are |
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| enabled. |
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| Computer is in standby | Press the power button to resume from | |
| mode. | standby mode. | |
ÄCAUTION: When attempting to resume from standby mode, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data.
You are using a | Be sure that the monitor can accept |
monitor and it will not sync | the same horizontal scan rate as the |
at the resolution chosen. | resolution chosen. |
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The VGA/BNC selector | Set the selector switch to agree with |
switch on the monitor | the cable connection. |
(some models) is not |
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properly set. |
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Bad monitor. | Try a different monitor. |
Power LED is flashing and computer will not start.
Initernal error has occurred and the computer is flashing a code.
Refer to “Interpreting Diagnostic Lights and Audible Codes” to interpret the error code.
Service Reference Guide |