Troubleshooting 37CPU F A N F A I L U R E — Processor fan failure. Replace processor fan. See yourService Manual at support.dell.com.HA R D -D I S K D R I V E F A I L U R E — Possible hard drive failure during hard drivePOST. Check cables, swap hard disks, or see "Contacting Dell" on page 65 forassistance.HA R D -D I S K D R I V E R E A D F A I L U R E — Possible hard drive failure during hard-drive start test (see "Contacting Dell" on page 65 for assistance).KE Y B O A R D F A I L U R E — Keyboard failure or keyboard cable loose.NO B O O T D E V I C E A V A I L A B L E — No bootable partition on hard drive, or thehard drive cable is loose, or no bootable device exists.• If the hard drive is your boot device, ensure that the cables are connectedand that the drive is installed properly and partitioned as a boot device.• Enter system setup and ensure that the boot sequence information iscorrect (see your Service Manual at support.dell.com).NO T I M E R T I C K I N T E R R U P T — A chip on the system board might bemalfunctioning or system board failure (see "Contacting Dell" on page 65 forassistance).USB O V E R C U R R E N T E R R O R — Disconnect the USB device. Use external powersource for the USB device.NOTICE - HA R D DR I V E SELF MONITORING SYSTEM H A S R E P O R T E D T H A T AP A R A M E T E R H A S E X C E E D E D I T S N O R M A L O P E R A T I N G R A N G E . DE L L R E C O M M E N D ST H A T Y O U B A C K U P Y O U R D A T A R E G U L A R L Y. A P A R A M E T E R O U T O F R A N G E M A Y O RM A Y N O T I N D I C A T E A P O T E N T I A L H A R D D R I V E P R O B L E M — S.M.A.R.T error,possible hard drive failure. This feature can be enabled or disabled in BIOSsetup.Troubleshooting Software and Hardware ProblemsIf a device is either not detected during the operating system setup or isdetected but incorrectly configured, you can use the HardwareTroubleshooter to resolve the incompatibility.To start the Hardware Troubleshooter:Windows Vista:1 Click the Windows Vista Start button , and click Help and Support.2 Type hardware troubleshooter in the search field and press to start the search.