Lenovo 2491 Laptop User Manual


 
Error code POST error message Description/Action
1820
More than one external ngerprint
reader is attached. Power off and
remove all but the reader that you
set up within your main operating
system.
If more than one external ngerprint
reader is connected to a computer,
this error message will be displayed
to inform you to remove all of the
ngerprint keyboards except the
one compatible with the ngerprint
application on your computer.
1962
No operating system found. Press
any key to repeat boot sequence.
This error occurs only after the POST
is completed.
Press any key to repeat boot
sequence.
Miscellaneous error messages
Message/Symptom FRU/Action
Changing display colors Display/Monitor
Computer will not power-off. See “Power problems” on
page 33.
1. Power Switch
2. System Board
3. Riser card, if installed
Computer will not PXE from server
1. Ensure that network is in startup sequence as rst
device or rst device after diskette
2. Ensure that network adapter is enabled for PXE
3. Network adapter (Advise network administrator of
new MAC address)
Computer will not perform a Wake on LAN® (if applicable) 1. Check power supply and signal cable connections
to network adapter.
2. Ensure that the operating system settings are set to
enable Wake on LAN.
3. Ensure Wake on LAN feature is enabled in
Setup/Conguration (see “Starting the Setup Utility
program” on page 41
)
4. Ensure network administrator is using correct MAC
address.
5. Ensure no interrupt or I/O address conicts.
6. Network adapter (advise network administrator of
new MAC address)
Dead computer. See “Power problems” on page 33. 1. AC/DC Power Adapter
2. System Board
Diskette drive in-use light remains on or does not light
when drive is active.
1. Diskette Drive
2. System Board
3. Diskette Drive Cable
Flashing cursor with an otherwise blank display.
1. System Board
2. Primary Hard Disk Drive
3. Hard Disk Drive Cable
Chapter 7. Symptom-to-FRU index 65