Dell GX240 User's Guide - Page 199

Computer Messages Message Cause Action No boot device available The computer cannot find Enter system setup, check the floppy or hard drive. the computer configuration information for the floppy and hard drive, and, if necessary, correct the information. No boot sector on hard-disk drive The computer Enter system setup, check configuration information the computer in system setup may be configuration information incorrect, or the operating for the hard drive, and if system may be corrupted. necessary, correct the information. If the problem persists, reinstall your operating system. See the documentation that came with your operating system. No timer tick interrupt A chip on the system board Run the System Board might be malfunctioning. Devices tests in the Dell Diagnostics Non-system disk or disk error The floppy in drive A or your hard drive does not have a bootable operating system installed on it. A nonbootable floppy is in drive A. Either replace the floppy with one that has a bootable operating system, or remove the floppy from drive A and restart the computer. Not a boot diskette There is no operating system on the floppy. Boot the computer with a floppy that contains an operating system. Solving Problems 197