Lenovo ThinkCentre A52 (English) Quick reference guide - Page 46
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Code 250 270 or 271 662 1762 1962 5962 Description The battery is defective. Real time clock error 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. A change in configuration occurred. 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. A change in configuration occurred. 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. No operating system found or no device in the startup sequence has a valid boot record. A change in configuration occurred. 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. 28 Quick Reference