Sony VGN-BX500 - Manual (Page 154)

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Troubleshooting
What should I do if the message "Operating system not found" appears when my
computer starts, and why won't Windows start?
❑ Make sure the computer does not have a "non-bootable" floppy disk in the floppy disk drive (if applicable).
❑ If a non-bootable floppy disk is in the drive:
1 Remove the floppy disk.
2 Restart the computer and confirm that the Microsoft Windows operating system starts properly.
❑ If the Windows operating system still does not start, follow these steps to initialize the BIOS:
1 If there is a disk in the floppy disk drive, remove it.
2 Turn off the computer.
3 Remove any peripheral devices connected to the computer.
4 Restart the computer.
5 Press the F2 key when the VAIO logo appears.
The BIOS setup screen appears.
6 Press the , key to select the Exit menu.
7 Press the F9 key.
The message Load default configuration now? appears.
8 Select Yes, and press the Enter key.
9 Select Exit (Save Changes), and press the Enter key.
The message Save configuration changes and exit now? appears.
10 Select Yes, and press the Enter key.
The computer restarts.