Sony VAIO VPCF12 Series - Manual (Page 129)

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Troubleshooting >
Computer Operations
How can I change the boot device order?
You can use one of the BIOS functions to change the boot device order. Follow these steps:
1 Turn on your computer.
2 Press the F2 key when the VAIO logo appears.
The BIOS setup screen appears. If the screen does not appear, restart the computer and press the F2 key several times
when the VAIO logo appears.
3 Press the < or , key to select Boot.
4 Press the M or m key to select your desired priority under Boot Priority and press the Enter key.
5 Press the M or m key to select the device to which you want to assign the priority and press the Enter key.
6 Press the < or , key to select Exit, select Exit Setup, and then press the Enter key.
At the confirmation prompt, press the Enter key.
What should I do if I cannot boot my computer from the USB floppy disk drive connected
to the computer?
To boot your computer from the USB floppy disk drive, you need to change the boot device.
Turn on your computer and press the F11 key when the VAIO logo appears.
Why is my computer running slowly and the CPU clock frequency low while the computer
is running on battery power?
While your computer is running on battery power, the CPU clock frequency is reduced for power conserving purposes, which
causes the computer to run slowly. This is normal and does not indicate a malfunction.