Dell Technology Guide
Page 275
... the documentation for more details. PREVIOUS ATTEMPTS AT BOOTING THIS SYSTEM HAVE FAILED AT CHECKPOINT [NNNN]. CPU fan failure. The computer failed to complete the boot routine three consecutive times for the same error (see "Contacting Dell" on page 337 for assistance). C P U F A N F A I C A L S U P P O R T -... HDD failure during HDD boot test (see the Service Manual for your computer). Replace the CPU fan (see "Contacting Dell" on page 337 for the topic on the Dell Support website support.dell.com. Possible motherboard failure or RTC battery low. FOR HELP IN RESOLVING THIS ...
... the documentation for more details. PREVIOUS ATTEMPTS AT BOOTING THIS SYSTEM HAVE FAILED AT CHECKPOINT [NNNN]. CPU fan failure. The computer failed to complete the boot routine three consecutive times for the same error (see "Contacting Dell" on page 337 for assistance). C P U F A N F A I C A L S U P P O R T -... HDD failure during HDD boot test (see the Service Manual for your computer). Replace the CPU fan (see "Contacting Dell" on page 337 for the topic on the Dell Support website support.dell.com. Possible motherboard failure or RTC battery low. FOR HELP IN RESOLVING THIS ...