VAIO® Computer Quick Start
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4Press the Right Arrow key to select the Exit tab, and then press the
Down Arrow key to select Get Default Values. The message Load
default values for all SETUP items appears.
5Press Enter. The Setup Confirmation window appears.
6Select Yes, and press Enter.
7Select Exit (Save Changes), and press Enter. The Setup Confirmation
window appears again.
8Select Yes, and press Enter. The computer restarts.

What do 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:
1Remove the floppy disk.
2Restart the computer and confirm that the Microsoft® Windows®
operating system starts properly.
❑If Windows still does not start, follow these steps to initialize the BIOS:
1If there is a disk in the floppy disk drive, then remove it.
2Turn off the computer.
3Remove any peripheral devices connected to the computer.
4Restart the computer.
5Press the F2 key when the Sony VAIO® logo appears. The BIOS Setup
window appears.
6Press the Right Arrow key to select the Exit menu.
7Press the Down Arrow key to select Get Default Values. The
message Load default values for all SETUP items appears.
8Press Enter. The Setup Confirmation window appears.
✍If this occurs on a regular basis, contact Sony Computing Support
(http://www.sony.com/pcsupport).