Dell UY691 82 , Add or Remove Programs, Change/Remove , or , Remove, Click , , Control Panel, , Start, Click , ., Select the program you want to remove., and follow the prompts on the screen. 4, See the program documentation for installation instructions.

82 Troubleshooting
them.
MEMORY WRITE/READ FAILURE AT ADDRESS, READ VALUE EXPECTING VALUE —A memory module may be
faulty or improperly seated. Reinstall the memory modules (see "Memory" on page115) and, if necessary, replace
them.
NO BOOT DEVICE AVAILABLE —The computer cannot find the hard drive. If the hard drive is your boot device,
ensure that the drive is installed, properly seated, and partitioned as a boot device.
NO BOOT SECTOR ON HARD DRIVE —The operating system may be corrupted. Contact Dell (see "Contacting Dell"
on page143).
NO TIMER TICK INTERRUPT —A chip on the system board may be malfunctioning. Run the System Set tests in the
Dell Diagnostics (see "Dell Diagnostics" on page73).
NOT ENOUGH MEMORY OR RESOURCES. EXIT SOME PROGRAMS AND TRY AGAIN —You have too many programs
open. Close all windows and open the program that you want to use.
OPERATING SYSTEM NOT FOUND—Reinstall the hard drive (see "Hard Drive" on page 108). If the problem
persists, contact Dell (see "Contacting Dell" on page143).
OPTIONAL ROM BAD CHECKSUM —The optional ROM apparently failed. Contact Dell (see "Contacting Dell" on
page143).A required.DLL file was not found
The program that you are trying to open is missing an essential file. Remove and then reinstall the program.
1 Click Start → Control Panel → Add or Remove Programs .
2 Select the program you want to remove.
3 Click Remove or Change/Remove and follow the prompts on the screen.
4 See the program documentation for installation instructions.
SECTOR NOT FOUND —The operating system cannot locate a sector on the hard drive. You may have a defective
sector or corrupted FAT on the hard drive. Run the Windows error-checking utility to check the file structure on the
hard drive. See the Help and Support Center for instructions. If a large number of sectors are defective, back up the
data (if possible), and then reformat the hard drive.
SEEK ERROR —The operating system cannot find a specific track on the hard drive.
SHUTDOWN FAILURE —A chip on the system board may be malfunctioning. Run the System Set tests in the Dell
Diagnostics (see "Dell Diagnostics" on page73).
TIME-OF-DAY CLOCK LOST POWER —System configuration settings are corrupted. Connect your computer to an
electrical outlet to charge the battery. If the problem persists, try to restore the data by entering the system setup
program. Then immediately exit the program. If the message reappears, contact Dell (see "Contacting Dell" on
page143).
TIME-OF-DAY CLOCK STOPPED —The reserve battery that supports the system configuration settings may require
recharging. Connect your computer to an electrical outlet to charge the battery. If the problem persists, contact Dell
(see "Contacting Dell" on page143).
TIME-OF-DAY NOT SET-PLEASE RUN THE SYSTEM SETUP PROGRAM —The time or date stored in the system
setup program does not match the system clock. Correct the settings for the Date and Time options (see "System
Setup Program" on page93).
TIMER CHIP COUNTER 2 FAILED —A chip on the system board may be malfunctioning. Run the System Set tests in
the Dell Diagnostics (see "Dell Diagnostics" on page73).