Sony Vista System Recovery, From recovery CD's Options

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Turn on the computer.
Insert Recovery Disc #1 into the DVD drive.
Turn off the computer.
Turn on the computer.
In the System Recovery Options window, under Select a keyboard layout:, click the Next button.
Under Select an operating system to repair, click the Next button.
Under Choose a recovery tool, click to select the desired option:

Startup Repair
System Restore
Windows Complete PC Restore
Windows Memory Diagnostic Tool
Command Prompt
VAIO Recovery Center

NOTES:

The Startup Repair option can automatically resolve certain issues that can prevent the operating system from starting.
System Restore can return the computer to a previous configuration of the operating system when it was working properly.
Windows Complete PC Restore will restore a previous backup of the computer created using the Windows Backup and Restore Center.
The Windows Memory Diagnostic Tool can determine if any problems being experienced are caused by issues with the computer's memory.
The option to open a Command Prompt can be used by advanced users and technical support personnel to perform troubleshooting on the hard drive or the operating system.
Clicking VAIO Recovery Center will launch VAIO Recovery Center from the Recovery Disc.