MSI K9NGM3 Series Manual page 23

Important Notification about Power Issue
NForce chipset is very sensitive to ESD (Electrostatic Discharge), therefore this
issue mostly happens while the users intensively swap memory modules under S5
(power-off) states, and the power code is plugged while installing modules. Due to
several pins are very sensitive to ESD, so this kind of memory-replacement actions
might cause system chipset unable to boot. Please follow the following solution to
avoid this situation.
Unplug the AC power cable or unplug the power connectors before the 1st installa-
tion or during system upgrade procedure.
Unplug the power connector
Important
Mainboard photos shown in this section are for demonstration only. The
appearance of your mainboard may vary depending on the model you purchase.
Hardware Setup
Unplug the AC power cable
Unplug the power connector
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