V A L U E — A memory module may be faulty or improperly seated. Reinstall the memory modules and, if necessary, replace them (see "Memory" on page 137).
M E M O R Y W R I T E / R E A D F A I L U R E A T A D D R E S S , R E A D V A L U E E X P E C T I N G V A L U E — A
memory module may be faulty or improperly seated. Reinstall the memory modules and, if necessary, replace them (see "Memory" on page 137).
N O B O O T D E V I C E A V A I L A B L E — 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.
N O B O O T S E C T O R O N H A R D D R I V E — The operating system may be corrupted. Contact Dell (see "Contacting Dell" on page 164).
N O T I M E R T I C K I N T E R R U P T — A chip on the system board may be malfunctioning. Run the System Set tests in the Dell Diagnostics (see "Dell Diagnostics" on page 87).
N O T E N O U G H M E M O R Y O R R E S O U R C E S . E X I T S O M E P R O G R A M S A N D T R Y A G A I N —
You have too many programs open. Close all windows and open the program that you want to use.
O P E R A T I N G S YS T E M N O T F O U N D — Reinstall the hard drive (see "Hard Drive" on page 129). If the problem persists, contact Dell (see "Contacting Dell" on page 164).
O P T I O N A L ROM B A D C H E C K S U M — The optional ROM has failed. Contact Dell (see "Contacting Dell" on page 164).
AR E Q U I R E D . DLL F I L E W A S N O T F O U N D — The program that you are trying to open is missing an essential file. Remove and then reinstall the program.
1Click Start 
→ Control Panel.
2Under Programs, click Uninstall a Program.
3Select the program you want to remove.
4Click Uninstall and follow the prompts on the screen.
5See the program documentation for installation instructions.
S E C T O R N O T F O U N D — 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 
→ Help and Support). If a large number of sectors are defective, back up the data (if possible), and then reformat the hard drive.
Troubleshooting
