Table
Control panel message | Description | Recommended action | |
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| 3. | If the error still persists, replace the |
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| system board. |
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Special system configurations with reduced ME | 1. | Reboot the computer. | |
| firmware image require BIOS control of ME | 2. | If the error persists, update to the latest |
| firmware upgrading. A failure has occurred | ||
|
| BIOS version and ME firmware version. | |
| after the ME firmware update process in which |
| |
|
|
| |
| the BIOS could not relock the ME firmware | 3. | If the error still persists, replace the |
| region. | ||
|
| system board. | |
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| |
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|
Special system configurations with reduced ME | 1. | Reboot the computer. | |
| firmware image require BIOS control of ME | 2. | If the error persists, update to the latest |
| firmware upgrading. A failure has occurred | ||
|
| BIOS version and ME firmware version. | |
| prior to the ME firmware update process in |
| |
|
|
| |
| which the BIOS could not unlock the ME | 3. | If the error still persists, replace the |
| firmware region. | ||
|
| system board. | |
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| |
|
|
| |
Invalid Electronic Serial Number | Electronic serial number is missing. | Enter the correct serial number in Computer | |
|
| Setup. | |
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|
Network Server Mode Active and No Keyboard | Keyboard failure while Network Server Mode | 1. | Reconnect keyboard with computer |
Attached | enabled. |
| turned off. |
|
| 2. | Check connector for bent or missing pins. |
|
| 3. | Ensure that none of the keys are |
|
|
| depressed. |
|
| 4. | Replace keyboard. |
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|
| |
Parity Check 2 | Parity RAM failure. | Run Computer Setup and Diagnostic utilities. | |
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Interpreting POST diagnostic front panel LEDs
This section covers the front panel LED codes as well as the audible codes that may occur before or during POST that do not necessarily have an error code or text message associated with them.
WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the power cord from the wall outlet and allow the internal system components to cool before touching.
NOTE: If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the computer and refer to the following table to determine the front panel LED codes.
Recommended actions in the following table are listed in the order in which they should be performed. Not all diagnostic lights and audible codes are available on all models.
Table
Activity | Beeps | Possible Cause | Recommended Action |
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|
|
|
White Power LED On. | None | Computer on. | None |
White Power LED flashes every | None | Computer in Suspend to |
two seconds. |
| RAM mode (some models |
|
| only) or normal Suspend |
|
| mode. |
None required. Press any key or move the mouse to wake the computer.
106 Chapter 10 POST Error Messages