Although Sony computers have a reputation for reliability, the system may malfunction. This may occur from a variety of reasons, including an infection by a virus that has impeded the system's ability to function properly. To restore a Sony VAIO VGN-NR310E, you can use two separate internal methods or insert the recovery disc. Before restoring, backup any data on an external drive or memory stick. All data, besides the factory settings, will be deleted.
Click on the "Control Panel" from the start menu.
Select the "Back up your computer" option under System and Security.
Click on "Restore system settings on your computer" in the Restore section.
Select "Advanced Recovery Methods."
Click on "Use a system image you created earlier to recover your computer."
Hit the "Skip" button when asked to back up your files. Click on "Restart" and the computer will restart and restore itself.
Restart the Sony VAIO. When the VAIO screen appears, hit the "F8" key.
Select "Repair Your Computer" and hit "Enter."
Hit "Next" in the System Recovery Options screen.
Enter the username and password for the computer. Click "OK."
Select "System Recovery Image" as the recovery tool. Follow any additional prompts as the VAIO restores itself.
Insert the recovery disc into the CD or DVD drive and restart the computer.
Press the "Enter" key when prompted to boot from a CD or DVD.
Select "Next" in the System Recovery Options screen.
Select the "Windows 7" (or other operating system) partition. Click "Next."
Select "System Image Recovery" as the recovery tool. Follow any additional prompts as the computer restores itself.