Dell Precision 400 Service Manual (.pdf) - Page 48
System Setup program, please run
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Table 3-2. System Error Messages (continued) Message Definition Probable Causes Diskette write protected Diskette write-protect Diskette write-protected. feature activated. Drive not ready Diskette missing from or improperly inserted in diskette drive. Missing, defective, unformatted, or improperly inserted diskette. Gate A20 failure Gate A20 of the keyboard controller malfunctioned. Faulty keyboard controller (defective system board). General failure Operating system cannot execute command. Operating system corrupted or not installed properly. Hard disk controller failure Hard disk drive read failure Hard disk failure Hard-disk drive failed to initialize. Incorrect configuration settings in System Setup program, improperly connected hard-disk drive cable, faulty hard-disk controller subsystem (defective system board), or loose power cable. Invalid configuration information please run SETUP program System Setup program contains incorrect system configuration settings. Incorrect configuration settings in System Setup program or faulty battery. Keyboard clock line failure Keyboard failure Keyboard data line failure System cannot communicate with keyboard. Keyboard cable connector loose or improperly connected, defective keyboard, or defective keyboard/mouse controller (defective system board). Keyboard stuck key failure Keyboard controller failure Keyboard/mouse controller failed. Defective keyboard/ mouse controller (defective system board). 3-6 Dell WorkStation 400 Systems Service Manual