System configuration jumper, J7B1 The system configuration jumper block, J7B1, requires a single jumper to set the configuration mode for the BIOS Setup Utility. This allows for all motherboard configuration to be done in Setup, including processor speed and bus frequency. Note: Do not move this jumper with the computer power on. The jumper is shown across pins 1 and 2 for normal operation.

System configuration jumper settings

Normal mode This mode is for normal computer starting and operations. Connect pins 1 and 2 with a jumper to enable the mode. The basic input/output system (BIOS) uses the current bus to processor frequency ratio, configuration information, and passwords to start up the computer. Access to the BIOS Setup Utility can be restricted using a supervisor or user password. In normal mode, the BIOS attempts an automatic recovery if the configuration information in flash memory is corrupt.

Configure mode

This mode is for configuring the processor speed and clearing passwords. Connect pins 2 and 3 with a jumper to enable the mode. In this mode, the BIOS Setup Utility automatically executes after the power-on self-test (POST) runs, and no password is required. Setup provides the maintenance menu with options for setting the processor speed and clearing passwords . All other Setup screens are also available. Configure mode uses the default BIOS settings for starting, not the current user or supervisor settings. The default settings include the lowest bus to processor frequency ratio the processor supports. When the computer is restarted, Setup uses the original user and supervisor settings with the exception of the options that were changed.

For the configuration changes to take effect after exiting the BIOS Setup Utility, turn off the computer, set the configuration jumper to normal mode and start the computer.

In configure mode, the BIOS attempts an automatic recovery if the configuration information in flash memory is corrupt.

Recovery mode

This mode is for recovering BIOS data. Remove the jumper from the configuration jumper block, so that no pins are connected, to enable this mode. After the computer is turned on, the BIOS attempts to upgrade or recover the BIOS data from a disk in the floppy disk drive. If the recovery fails with a disk in the boot drive, a beep code indicates that the recovery failed. If a disk is not in the boot drive, the BIOS attempts to run the power-on self-test (POST), does not start up the operating system and displays a message that the jumper is not properly installed.

For the configuration changes to take effect after a successful recovery, turn off the computer, set the configuration jumper to normal mode, and then start the computer.