46 Troubleshootingsetup program, then immediately exit the program (see your Service Manualat support.dell.com). If the message reappears, contact Dell (see "ContactingDell" on page 71).TI M E -O F -D A Y C L O C K S T O P P E D — The reserve battery that supports the systemconfiguration settings may require recharging. Connect your computer to anelectrical outlet to charge the battery. If the problem persists, contact Dell(see "Contacting Dell" on page 71).TI M E -O F -D A Y N O T S E T -P L E A S E R U N T H E SYS T E M SE T U P P R O G R A M — The timeor date stored in the system setup program does not match the system clock.Correct the settings for the Date and Time options. See your Service Manualat support.dell.com for more information.TI M E R C H I P C O U N T E R 2 F A I L E D — A chip on the system board may bemalfunctioning. Run the System Set tests in the Dell Diagnostics (see "DellDiagnostics" on page 48).UN E X P E C T E D I N T E R R U P T I N P R O T E C T E D M O D E — The keyboard controller maybe malfunctioning, or a memory module may be loose. Run the SystemMemory tests and the Keyboard Controller test in the Dell Diagnostics (see"Dell Diagnostics" on page 48).X :\ I S N O T A C C E S S I B L E . TH E D E V I C E I S N O T R E A D Y — Insert a disk into thedrive and try again.WA R N I N G : BA T T E R Y I S C R I T I C A L L Y L O W — The battery is running out ofcharge. Replace the battery, or connect the computer to an electrical outlet;otherwise, activate hibernate mode or shut down the computer.System 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 E T H I SC 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 computer failedto complete the start routine three consecutive times for the same error (see"Contacting Dell" on page 71 for assistance).CMOS C H E C K S U M E R R O R — Possible system board failure or RTC battery low.Replace the battery. See your Service Manual at support.dell.com or see"Contacting Dell" on page 71 for assistance.