Dell Inspiron 531S Owner's  Manual - Page 82

System Messages NOTE: If the message you received is not listed in the table, see the documentation for either the operating system or the program that was running when the message appeared. ALERT! PREVIOUS ATTEMPTS AT BOOTING THIS SYSTEM HAVE FAILED AT CHECKPOINT [NNNN]. FOR HELP IN RESOLVING THIS PROBLEM, PLEASE NOTE T H I S C H E C K P O I N T A N D C O N T A C T D E L L TE C H N I C A L S U P P O R T - The computer failed to complete the boot routine three consecutive times for the same error (see "Getting Help" on page 183 for assistance). C M O S C H E C K S U M E R R O R - Possible motherboard failure or RTC battery low. Replace battery (see "Replacing the Battery" on page 144 or see "Getting Help" on page 183 for assistance). C P U F A N F A I L U R E - CPU fan failure. Replace CPU fan (see "Removing the Processor Fan" on page 155). D I S K E T T E D R I V E 0 S E E K F A I L U R E - A cable may be loose, or the computer configuration information may not match the hardware configuration. Check cable connections (see "Getting Help" on page 183 for assistance). D I S K E T T E R E A D F A I L U R E - The floppy disk may be defective or a cable may be loose. Replace floppy disk/check for loose cable connection. H A R D - D I S K D R I V E F A I L U R E - Possible hard disk drive failure during HDD POST. check cables /swap hard disks (see "Getting Help" on page 183 for assistance). H A R D - D I S K D R I V E R E A D F A I L U R E - Possible HDD failure during HDD boot test (see "Getting Help" on page 183 for assistance). K E Y B O A R D F A I L U R E - Keyboard failure or keyboard cable loose (see "Keyboard Problems" on page 62). 82 Troubleshooting Tools