Beep Symptoms - IBM THINKPAD T400S Hardware Maintenance Manual

Table 3. Error messages (continued)
Symptom or error
Invalid system configuration data.
I/O device IRQ conflict.
Hibernation error.
Fan error.
Thermal sensing error.
Cannot boot from any device.

Beep symptoms

Table 4. Beep symptoms
Symptom or error
One beep and a blank, unreadable, or flashing LCD.
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Hardware Maintenance Manual
FRU or action, in sequence
1. DIMM.
2. System board.
1. Load "Setup Defaults" in the BIOS Setup Utility.
2. Backup battery.
3. System board.
1. Restore the system configuration to what it was
before the computer entered hibernation mode.
2. If memory size has been changed, re-create the
hibernation file.
1. Fan.
2. Thermal grease.
3. System board.
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.
FRU or action, in sequence
1. Reseat the LCD connector.
2. LCD assembly.
3. External CRT.
4. System board.