MSI Ultimate Guide to Clear CMOS Jumper and JBAT1 on Motherboards

Models: Z77A-G45

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MS-7752

Jumpers

JBAT1: Clear CMOS Jumper

There is CMOS RAM onboard that is external powered from a battery located on the mainboard to save system configuration data. With the CMOS RAM, the system can automatically boot into the operating system (OS) every time it is turned on. If you want to clear the system configuration, set the jumpers to clear the CMOS RAM.

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Keep Data

Clear Data

Chapter 1

Important

You can clear the CMOS RAM by shorting this jumper while the system is off. Afterwards, open the jumper . Do not clear the CMOS RAM while the system is on because it will damage the mainboard.

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MSI Z77A-G45 manual Jumpers, JBAT1 Clear Cmos Jumper