Note: It is possible that the SP1 restore point may be removed due to disk space very soon after SP1 is installed. If it is not present then the use of System Restore to return to a pre-SP1 state is not possible.

1. Place the Windows Vista operating system disc in the optical drive. Close any dialog boxes that open.

2. Restart the computer.

   Note: The computer must be configured to boot to the CD/DVD drive.

3. After the Gateway® / eMachines® BIOS logo appears, when prompted, press any key to boot from CD or DVD.
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4. Windows loads files.
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5. In the Install Windows dialog box, select the appropriate information, and then click Next.
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6. In the Install Windows dialog box, click Repair your computer.
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7. In the System Recovery Options dialog box, select the appropriate operating system, and then click Next. If controller drivers are needed, click Load Drivers.
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8. In the System Recovery Options window, select System Restore.
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9. In the Restore system files and settings dialog box, click Next.
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10. In the Choose a restore point dialog box, select Install: Windows Vista Service Pack 1, and then click Next.
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11. In the Confirm disks to restore dialog box, click Next.
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12. In the Confirm your restore point dialog box, click Next.
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13. In the System Restore dialog box, click Yes.
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14. The computer restores the files and finalizes the changes.
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15. In the System Restore dialog box, click Restart.
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16. The computer restarts.

17. After the computer returns to Windows, in the System Restore dialog box, click Close.
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18. Removal is complete.