Power
Symptom | Possible solution |
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Computer will not turn on | Ensure that the cables connecting the computer to the external power source |
or start. | are plugged in properly. |
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| When the cables connecting the computer to the external power source are |
| plugged in properly, and the wall outlet is functioning, the green power supply |
| light on the back of the computer should be on; if it is not, refer to the Limited |
| Warranty and Support Guide to contact Support. |
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|
| Ensure that the switch on the back of your power supply is set to the ON |
| position. |
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|
| If the screen is blank, the monitor may not be properly connected. Connect the |
| monitor to the computer, plug it in, and turn it on. See “Display (Monitor)” on |
| page 11. |
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|
| Set the line voltage selection switch to the correct setting for your |
| country/region, or refer to the Limited Warranty and Support Guide to contact |
| Support. |
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|
| Test the wall outlet by connecting a different electrical device to it. |
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|
| Incompatible memory (RAM) may have been installed. Reinstall the old |
| memory to return the computer to its original state. For instructions, refer to the |
| Upgrading and Servicing Guide. |
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|
| Reseat the hard disk drive data and power cables. For instructions, refer to the |
| Upgrading and Servicing Guide. |
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|
Error message: Invalid system | When drive activity stops, remove the disk and press the spacebar on the |
disk or | keyboard. The computer should start up. |
disk error. |
|
Computer does not turn off when the On button is pressed.
Press and hold the On button until the computer turns off.
Computer shuts down | The computer may be in an exceedingly hot environment. Let it cool down. |
automatically. | Ensure that the computer air vents are not blocked, and that the internal fan is |
| |
| running. Note that your computer may not have an internal fan. |
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|
Computer displays the wrong | The |
date and time. | approximately seven years. |
| Before replacing the battery, try resetting the date and time in Windows Vista |
| by using Control Panel. If the problem persists, replace the battery. For |
| instructions, refer to the Upgrading and Servicing Guide. |
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Troubleshooting Computer Problems 19