Error messages DescriptionNO TIMER TICK INTERRUPT A chip on the system board may bemalfunctioning. Run the System Set tests in DellDiagnostics.NOT ENOUGH MEMORY OR RESOURCES. EXITSOME PROGRAMS AND TRY AGAINYou have too many programs open. Close allwindows and open the program that you want touse.OPERATING SYSTEM NOT FOUND Reinstall the operating system. If the problempersists, Contact Dell.OPTIONAL ROM BAD CHECKSUM The optional ROM has failed. Contact Dell.SECTOR NOT FOUND The operating system cannot locate a sector onthe hard drive. You may have a defective sector orcorrupted File Allocation Table (FAT) on the harddrive. Run the Windows error-checking utility tocheck the file structure on the hard drive. SeeWindows Help and Support for instructions (clickStart → Help and Support). If a large number ofsectors are defective, back up the data (if possible),and then format the hard drive.SEEK ERROR The operating system cannot find a specific trackon the hard drive.SHUTDOWN FAILURE A chip on the system board may bemalfunctioning. Run the System Set tests in DellDiagnostics. If the message reappears, ContactDell.TIME-OF-DAY CLOCK LOST POWER System configuration settings are corrupted.Connect your computer to an electrical outlet tocharge the battery. If the problem persists, try torestore the data by entering the System Setupprogram, then immediately exit the program. If themessage reappears, Contact Dell.TIME-OF-DAY CLOCK STOPPED The reserve battery that supports the systemconfiguration settings may require recharging.Connect your computer to an electrical outlet tocharge the battery. If the problem persists, ContactDell.TIME-OF-DAY NOT SET-PLEASE RUN THESYSTEM SETUP PROGRAMThe time or date stored in the system setupprogram does not match the system clock. Correctthe settings for the Date and Time options.TIMER CHIP COUNTER 2 FAILED A chip on the system board may bemalfunctioning. Run the System Set tests in DellDiagnostics.UNEXPECTED INTERRUPT IN PROTECTED MODE The keyboard controller may be malfunctioning, ora memory module may be loose. Run the System32