Dell Technology Guide
Page 275
... H E C K S U M E R R O R - CPU fan failure. D I S K R E A D F A I C A L S U P P O R T - FOR HELP IN RESOLVING THIS PROBLEM, PLEASE NOTE THIS 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 L U R E - Possible motherboard failure or RTC battery low. If the computer malfunctions, you received is not listed in the table, see the Service Manual for your...you can use the status of certain features. ALERT! Possible HDD failure during HDD boot test (see "Contacting Dell" on page 337 for assistance). H A R D - During normal operation, the keyboard status lights display ...
... H E C K S U M E R R O R - CPU fan failure. D I S K R E A D F A I C A L S U P P O R T - FOR HELP IN RESOLVING THIS PROBLEM, PLEASE NOTE THIS 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 L U R E - Possible motherboard failure or RTC battery low. If the computer malfunctions, you received is not listed in the table, see the Service Manual for your...you can use the status of certain features. ALERT! Possible HDD failure during HDD boot test (see "Contacting Dell" on page 337 for assistance). H A R D - During normal operation, the keyboard status lights display ...