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 65).
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 42).
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 your Service Manual at support.dell.com). If the problem persists, contact Dell (see "Contacting Dell" on page 65).
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 65).
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.
Windows XP:
1Click Start→ Control Panel→ Add or Remove Programs→ Programs and Features.
2Select the program you want to remove.
3Click Uninstall.
4See the program documentation for installation instructions.
Windows Vista:
1Click the Windows Vista Start button 
→ Control Panel→ Programs→ Programs and Features.
2Select the program you want to remove.
3Click Uninstall.
4See 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
Troubleshooting
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