Sony PCG-R505GCK - Manual (Page 163)

Troubleshooting Your Computer
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4 Press the Right Arrow key to select the Exit tab, and then press the
Down Arrow key to select Get Default Values.
5 Press Enter. The Setup Confirmation window appears.
6 Select Yes, and press Enter.
7 Select Exit (Save Changes), and press Enter. The Setup Confirmation
window appears again.
8 Select Yes, and press Enter. The computer restarts.
Why does the message, “Operating system not found” appear when my
computer starts, and why won’t Windows start?
❑ If you have connected a docking station with a floppy disk drive or an
external floppy disk drive, make sure there is no disk in the floppy disk drive
(non-bootable).
❑ If a non-bootable floppy disk is in the drive, follow these steps:
1 Turn off the computer, and remove the floppy disk.
2 Restart 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:
1 Remove any floppy disk from the floppy disk drive.
2 Turn off the computer.
3 Remove any peripheral devices connected to the computer.
4 Restart the computer.
5 Press F2 when the Sony logo appears. The BIOS Setup window
appears.
6 Press the Right Arrow key to select the Exit menu.
7 Press the Down Arrow key to select Get Default Values.
8 Press Enter. The Setup Confirmation window appears.
9 Select Yes, and press Enter.
✍
If this occurs on a regular basis, contact Sony Computing Support
(http://www.sony.com/pcsupport).