Table 10-1 Numeric Codes and Text Messages (continued)
Control panel message | Description | Recommended action | |
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|
|
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Special system configurations with reduced | 1. | Reboot the computer. | |
| ME firmware image require BIOS control of | 2. | If the error persists, update to the latest |
| ME firmware upgrading. A failure has | ||
|
| BIOS version and ME firmware version. | |
| occurred prior to the ME firmware update |
| |
|
|
| |
| process in which the BIOS could not unlock | 3. | If the error still persists, replace the |
| the ME firmware region. | ||
|
| system board. | |
|
|
| |
|
|
| |
Invalid Electronic Serial Number | Electronic serial number is missing. | Enter the correct serial number in Computer | |
|
| Setup. | |
Network Server Mode Active and No | Keyboard failure while Network Server |
Keyboard Attached | Mode enabled. |
1.Reconnect keyboard with computer turned off.
2.Check connector for bent or missing pins.
3.Ensure that none of the keys are depressed.
4.Replace keyboard.
Parity Check 2 | Parity RAM failure. | Run Computer Setup and Diagnostic utilities. |
|
|
|
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes
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 10-2 Diagnostic Front Panel LEDs and Audible Codes
Activity | Beeps | Possible Cause | Recommended Action |
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|
|
|
Green Power LED On. | None | Computer on. | None |
Green Power LED flashes every None two seconds.
Computer in Suspend to RAM mode (some models only) or normal Suspend mode.
None required. Press any key or move the mouse to wake the computer.
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 195
