Troubleshooting Tools 85NO 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, no bootablefloppy in floppy driver, the hard drive or floppy cable is loose, or no bootable deviceexists.• If the floppy drive is your boot device, ensure that a bootable floppy disk is in thedrive.• If the hard drive is your boot device, ensure that the cables are connected andthat the drive is installed properly and partitioned as a boot device.• Enter system setup and ensure that the boot sequence information is correct.See "Entering System Setup" on page 174.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 motherboard failure. See "Contacting Dell" on page 187 forassistance.NO N -S YS T E M D I S K O R D I S K E R R O R — Replace the floppy disk with one that hasa bootable operating system or remove the floppy disk from drive A and restart thecomputer.NO T A B O O T D I S K E T T E — Insert a bootable floppy disk and restart your computer.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.N OTIC E - 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 LR E C O M M E N D S T 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 TO F R A N G E M A Y O R M 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 or possible hard drive failure. This feature can be enabled ordisabled in the BIOS setup.