Lenovo THINKCENTRE 4485 - Manual (Page 77)

POST Error Message Description/Action
Press TAB to show POST screen Pressing the TAB key permits the user to toggle between
the default POST display screen and a custom POST
display screen.
Error: Non-System disk or disk error Replace and press
any key when ready The BIOS was unable to find a suitable boot device.
Make sure the boot drive is properly connected to the
computer.
Make sure you have bootable media.
Miscellaneous error messages
Message/Symptom FRU/Action
Changing display colors Display/Monitor
Computer will not power-off. See “Hard disk drive boot
error” on page 49. 1. Power Switch
2. System Board
3. Riser card, if installed
Computer will not RPL from server 1. Ensure that network is in startup sequence as first
device or first device after diskette
2. Ensure that network adapter is enabled for RPL
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/Configuration (see “Starting the Setup Utility
program” on page 43)
4. Ensure network administrator is using correct MAC
address
5. Ensure no interrupt or I/O address conflicts
6. Network adapter (advise network administrator of
new MAC address)
Dead computer. See “Hard disk drive boot error” on page
49. 1. Power Supply
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
Incorrect memory size during POST 1. Run the Memory tests
2. Memory Module
3. System Board
Chapter 7 . Symptom-to-FRU index 69