Nvidia nForce2 Ultra 400, User Manual

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Installation
Page 3-16
3-9 CPU Overheating Protection
This mainboard is equipped with CPU Overheating Protection. It will automati-
cally shutdown the system when CPU temperature reaches approximately 110°C
to prevent long term damage to the CPU. When this happens, the speaker
produces a sustained beep sound and the system will not be able to power on.
This protection is designed through hardware and no BIOS setup is required.
To power on your system again,
Step 1 : Unplug the ATX power cord (or turn off the ATX power supply
switch)
Step 2 : Wait a few minutes for the CPU to cool.
Step 3 : Check that the CPU heatsink and cooling fan assembly is properly
installed.
Be careful when touching the heatsink as it may be hot.
Step 4 : Plug back the ATX power cord (or turn on the ATX power supply
switch) and power -on the system.
If the beeping sound persists, repeat Step 1 to remove the power source.