DFI PT880-ALE User Manual page 80

3
BIOS Setup
3.1.7.4 CPU Clock
This field provides several options for selecting the external sys-
tem bus clock of the CPU. The available options allow you to
adjust the CPU's bus clock in 1MHz increment.
If, in the "CPU Clock Ratio" or "CPU Clock" field, you selected an
option other than the default setting and is unable to boot up
the system, there are 2 methods of booting up the system and
going back to its default setting.
Method 1:
Clear the CMOS data by setting JP1 to 2-3 On. All fields in the
BIOS Setup will automatically be set to their default settings.
Method 2:
Press the <Insert> key and power button simultaneously, then
release the power button first. Keep-on pressing the <Insert>
key until the power-on screen appears. This will allow the system
to boot according to the FSB of the processor. Now press the
<Del> key to enter the main menu of the BIOS. Select "Fre-
quency/Voltage Control" and set the "CPU Clock Ratio" or "CPU
Clock" field to its default setting or an appropriate bus clock or
ratio.
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Important:
Overclocking may result in the processor's or system's instability
and is not guaranteed to provide better system performance.
Note:
Use a PS/2 or AT (requires a DIN to mini DIN adapter) key-
board for method 2.