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Troubleshooting

What should I do if Windows does not start, showing the message "Operating system not found," when I turn on my computer?

❑Make sure your computer does not have a "non-bootable" CD or DVD in the optical disc drive (if applicable).

❑If a non-bootable media is in the drive, follow these steps:

1 Remove the media.

2 Restart your 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 CD or DVD in the optical disc drive, remove it.

2 Turn off your 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 m key to select Load Optimal Defaults.

8 Press the Enter key.

The Load Defaults? window appears.

9 Press the Y key on the keyboard.

10 Select Exit Saving Changes and press the Enter key. The Exit Saving Changes? window appears.

11 Press the Y key on the keyboard. Your computer restarts.