How Can I Change The Volume Of The Startup Sound - Sony VAIO VGC-LS30 Series User Manual

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.

How can I change the volume of the startup sound?

To change the startup sound volume
1 Turn on the computer.
2 Press the F2 key when the VAIO logo appears.
The BIOS setup screen appears. If not, restart the computer and press the F2 key several times when the VAIO logo
appears.
3 Press the < or , key to select Advanced.
4 Press the M or m key to select Speaker Volume and press the Enter key.
5 Press the M or m key to select the speaker volume at startup and press the Enter key.
6 Press the < or , key to select Exit, select Exit Setup, and then press the Enter key.
7 At the confirmation prompt, press the Enter key.
Your computer restarts and you will hear the startup sound at the specified volume level.
You can also show/hide the VAIO animation logo at startup. On the screen that is displayed after step 3 above, select VAIO
Animation Logo or Show VAIO Animation Logo and press the Enter key to proceed with the setting. Hiding the VAIO
animation logo will also turn off the startup sound.
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Troubleshooting