Lenovo ThinkCentre A51 Quick Reference Manual page 52

Code Description
270 or 271 Real time clock error
662 A change in configuration
occurred.
1762 A change in configuration
occurred.
1962 No operating system found or
no device in the startup
sequence has a valid boot
record.
5962 A change in configuration
occurred.
8603 Pointing device error
No mouse was detected.
28
Quick Reference
Action
Set the date and time using the Setup
Utility.
If you cannot correct the problem,
have the computer serviced.
A diskette drive has been added or
removed.
v Restore the original hardware.
Or
v Accept the new configuration using
the Setup Utility.
If you cannot correct the problem,
have the computer serviced.
A hard disk drive has been added or
removed.
v Restore the original hardware.
Or
v Accept the new configuration using
the Setup Utility.
If you cannot correct the problem,
have the computer serviced.
Change the startup sequence using
the Setup Utility.
If you cannot correct the problem,
have the computer serviced.
An ATAPI device has been added or
removed.
v Restore the original hardware.
Or
v Accept the new configuration using
the Setup Utility.
If you cannot correct the problem,
have the computer serviced.
v Install a mouse.
Or
v Set the mouse option correctly
using the Setup Utility.
If you cannot correct the problem,
have the computer serviced.