If you don't see the message, you don't have a recovery partition on your hard drive and must use recovery discs instead. Quickly tap the 'F11' key when you see the message. Watch for a message during the reboot that tells you to press F11 to access the product recovery program. Press 'F10' to save the configuration changes and restart the computer. Insert 'Disc 1' of your recovery DVDs into the drive at this point. Set the DVD drive as the first boot device. Select 'Startup,' and then select 'Primary Boot Sequence,' 'Boot' or 'Startup Sequence,' depending on your model. If you are restoring the ThinkCentre to Windows 7 or earlier, skip this step.Ĭhange the startup sequence if you are restoring from a set of recovery discs, so that the system boots from the DVD drive. Use the arrows on your keyboard to select 'Exit' or 'Restart,' and then select 'OS Optimized Defaults.' Change the setting to 'Disabled.' This step allows the computer to enable the UEFI file system, and is recommended if you are restoring to Windows 8. This opens the Setup Utility program from which you can change your BIOS settings. Restart the ThinkCentre and repeatedly tap the 'F1' key as the computer boots up. Remove any peripherals such as printers and USB devices that didn't come with the original system.

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