- 1). Back up any information from your computer that you wish to save. Once you reinstall Windows XP, you will no longer be able to access this information.
- 2). Insert the Windows XP CD into your Thinkpad T43 and wait for the Windows XP window to appear. Once it does, click the "Install Windows XP" button.
- 3). Click the "Upgrade (Recommended)" button on the setup page and then click the "Next" button. Click "I accept this agreement," click the "Next" button again and then type in your 25-character installation product key, usually located on the bottom of your computer.
- 4). Click the "Next" button, click "Next" again and then wait for the computer to reinstall XP. The computer may reboot multiple times during this process. Once the installation is finished, you can use your computer again.
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