MSI MS-6319 Manual page 9

2.1-5 CPU Core/Bus Ratio strap to Safe Mode: JP3
This jumper is used to adjust the CPU core/ratio to safe mode.
JP3
Short
Open
Warning: If CPU Core/Bus ratio is set too high, the system may
hang. Short pin JP3, then restart the system until boot up.
The CPU core/bus ratio will then be set to the default
setting of 2. Properly shutdown the system, and remove
the short on JP3.
Function
Safe Mode
(Core/Bus Ratio by 2)
Core/Bus Ratio in ICH
Register (Default)
2-5
JP3