Lenovo ThinkPad W510 Hardware Maintenance Manual - Page 57

Beep symptoms, Table 3. Error messages continued, Table 4. Beep symptoms

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Table 3. Error messages (continued) Symptom or error Thermal sensing error. Cannot boot from any device. FRU or action, in sequence System board. Check the status of device which you want to boot from. Device not found. 1. The device you want to boot from. 2. System board. Device Error. 1. The device you want to boot from. 2. System board. No valid operating system. 1. Check that the operating system has no failure and is installed correctly. 2. Reinstall the operation system. Excluded from boot order. • Enter the BIOS Setup Utility and add the device in boot order. Beep symptoms Table 4. Beep symptoms Symptom or error FRU or action, in sequence One beep and a blank, unreadable, or flashing LCD. 1. Reseat the LCD connector. 2. LCD assembly. 3. External CRT. 4. System board. One long and two short beeps, and a blank or unreadable LCD. 1. System board. 2. LCD assembly. 3. DIMM. Two short beeps with error codes. POST error. See "Numeric error codes" on page 46. Two short beeps and a blank screen. 1. System board. 2. DIMM. Two or more beeps, or a continuous beep. Operating system starts successfully. If a mini-PCI Ethernet card is installed, confirm that Alert On LAN 2 in BIOS Setup Utility is disabled. Three short beeps, pause, three more short beeps, and one short beep. 1. DIMM. 2. System board One short beep, pause, three short beeps, pause, three more short beeps, and one short beep. Only the cursor appears. Reinstall the operating system. Four cycles of four short beeps and a blank screen. System board (security chip) Five short beeps and a blank screen. System board Chapter 4. Related service information 51

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Table 3. Error messages (continued)
Symptom or error
FRU or action, in sequence
Thermal sensing error.
System board
.
Cannot boot from any device.
Check the status of device which you want to boot
from.
Device not found.
1. The device you want to boot from.
2. System board.
Device Error.
1. The device you want to boot from.
2. System board.
No valid operating system.
1. Check that the operating system has no failure and is
installed correctly.
2. Reinstall the operation system.
Excluded from boot order.
•
Enter the BIOS Setup Utility and add the device in boot
order.
Beep symptoms
Table 4. Beep symptoms
Symptom or error
FRU or action, in sequence
One beep and a blank, unreadable, or flashing LCD.
1.
Reseat the LCD connector
.
2. LCD assembly.
3. External CRT.
4. System board.
One long and two short beeps, and a blank or unreadable
LCD.
1.
System board
.
2. LCD assembly.
3. DIMM.
Two short beeps with error codes.
POST error. See “Numeric error codes” on page 46.
Two short beeps and a blank screen.
1.
System board
.
2. DIMM.
Two or more beeps, or a continuous beep. Operating
system starts successfully.
If a mini-PCI Ethernet card is installed, confirm that
Alert
On LAN 2
in BIOS Setup Utility is
disabled
.
Three short beeps, pause, three more short beeps, and
one short beep.
One short beep, pause, three short beeps, pause, three
more short beeps, and one short beep.
1.
DIMM
.
2. System board
Only the cursor appears.
Reinstall the operating system
.
Four cycles of four short beeps and a blank screen.
System board
(security chip)
Five short beeps and a blank screen.
System board
Chapter 4
.
Related service information
51