Sony VPCZ2390X Manual

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Troubleshooting >
Computer Operations
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.
1
Make sure Fast BIOS Startup Settings on the VAIO Control Center is disabled 
2
Restart your computer and press the F11 key repeatedly until the VAIO logo disappears.
❑ If you have disabled the USB ports in the BIOS setup screen, you cannot use the USB floppy disk drive connected to one 
of the USB ports. To enable the ports, follow the steps in Disabling Built-in Devices 
 
Why doesn't the VAIO logo appear when I turn on my computer?
When Fast BIOS Startup Settings on the VAIO Control Center is enabled, the VAIO logo does not appear. To disable Fast 
BIOS Startup Settings
, follow these steps:
1
Click StartAll Programs, and VAIO Control Center.
2
Click System Information and Fast BIOS Startup Settings to disable the settings.