88 Troubleshooting ToolsSystem MessagesNOTE: If the message you received is not listed in the table, see the documentationfor either the operating system or the program that was running when the messageappeared.AL E R T ! PR E V I O U S A T T E M P T S A T B O O T I N G T H I S S YS T E M H A V E F A I L E D A TC H E C K P O I N T [N N N N ]. FO R H E L P I N R E S O L V I N G T H I S P R O B L E M , P L E A S E N O T ET H I S C H E C K P O I N T A N D C O N T A C T DE L L TE C H N I C A L SU P P O R T — The computerfailed to complete the boot routine three consecutive times for the same error(see "Contacting Dell" on page 202 for assistance).CMOS 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 160 or see "Contacting Dell"on page 202 for assistance.CPU F A N F A I L U R E — CPU fan failure. Replace CPU fan. See "Removing theProcessor Fan/Heat Sink Assembly" on page 166.DI 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 computerconfiguration information may not match the hardware configuration. Check cableconnections or see "Contacting Dell" on page 202 for assistance.DI 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 beloose. Replace floppy disk/check for loose cable connection.HA R D -D I S K D R I V E F A I L U R E — Possible hard disk drive failure during HDDPOST. Check cables /swap hard disks or see "Contacting Dell" on page 202 forassistance.HA 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 "Contacting Dell" on page 202 for assistance).K E Y B O A R D F A I L U R E — Keyboard failure or keyboard cable loose (see "KeyboardProblems" on page 69).
