Sony PCG-TR3A Manual

Can my computer enter Hibernate mode while using battery power?

Your computer can enter Hibernate mode while using battery power, but some software programs and peripheral devices
prevent the system from entering Hibernate mode. If you are using a program that prevents the system from entering
Hibernate mode, save your data frequently to avoid losing data. See

To activate Hibernate mode

for information on how

you can manually activate Hibernate mode.

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