Troubleshooting Without Diagnostics
Solving General Problems
You may be able to easily resolve the minor problems described in this section. If a problem persists and you are unable to resolve it yourself or if you feel uncomfortable about performing the operation, contact your HP authorized reseller or service provider.
Problem | Cause | Solution | |
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Computer will not | Cables to the external | Ensure that cables connecting the | |
turn on. | power source are | computer to the external power source | |
| unplugged. | are plugged in properly and the wall | |
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| outlet is active. | |
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| |
| Voltage selector switch on | Select the proper AC voltage using the | |
| the rear of the computer | slide switch. | |
| chassis is not switched to |
| |
| the correct voltage (115V |
| |
| or 230V). |
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| A defective PCI card has | Remove any expansion board that | |
| been installed. | was just installed. | |
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| Drive data or power supply | Reseat drive data and power supply | |
| cables may not be | cables. | |
| properly connected. |
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| The unit temperature was | 1. Unit is in an exceedingly hot | |
| exceeded. The fan may be | environment. Let it cool down. | |
| blocked. | 2. Ensure that computer air vents are | |
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| ||
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| not blocked and the internal fan is | |
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| running. | |
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| 3. Contact an HP authorized reseller | |
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| or service provider. | |
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Computer appears | Software control of the | 1. Press and hold the power button | |
locked up and will not | power switch is not | for at least four seconds until the | |
turn off when the power | functional. | computer turns off. | |
button is pressed. |
| 2. Disconnect the power cord from | |
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| ||
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| the electrical outlet. | |
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Computer will not | Computer is in | Press the power button to resume from | |
respond to USB | standby mode. | standby mode. | |
keyboard or mouse. |
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Keyboard or mouse is not | Connect keyboard and mouse cables | ||
| |||
| connected to computer. | to computer. | |
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| System has locked up. | Restart the computer. |
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.
Service Reference Guide |