IWILL P4DA, User Manual, Page: 36 / 96

P4DA Motherboard
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User’s Manual 3•2
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BIOS-Related Jumper
Jumper JP7: Clear CMOS Memory
Although JP7 is a jumper switch, it is not for hardware
configuration. The BIOS CMOS Setup Utility creates a sys-
tem configuration record that is stored in CMOS memory
in the real-time clock chip. If the configuration record
data becomes corrupted or is destroyed, or if the CMOS
Setup Utility settings are changed to an unusable con-
figuration, the motherboard may not run properly or at
all.
Follow this procedure to clear CMOS memory. The jumper
is beside the coin battery. If necessary, refer to the board
diagram and key in Chapter 2 for the location of the JP6
jumper.
1. Turn off and unplug the system. Remove the system
housing cover (see documentation if necessary).
2. Set JP7 to the Clear CMOS position by placing the
jumper cap over pins 2 and 3 for one minute.
3. Return the jumper cap to the Normal position.
4. Replace the system housing cover, plug in the sys-
tem and turn it on.
5. Run the CMOS Setup utility and load the Optimized
Defaults. You can then enter any custom settings
you require.
6. Save the settings as you exit the program and restart
the computer.
The system should now operate normally.
JP7: Clear CMOS Memory
Setting Function
Short 1-2 Normal operation [Default]
Short 2-3 Clear CMOS memory – see instructions