Lenovo ThinkCentre M52 Quick Reference Manual page 50

Code Description
250 The battery is defective.
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.
30
Quick Reference
Action
Replace the battery. See the battery
replacement procedure in your online
User Guide, which is available
through Access Help.
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.