用XP KEY GENERATOR算個新的CD KEY,下麵是微軟教你如何該號的步驟，然後上微軟去下載所有的補丁和升級。
Use the Activation Wizard:
If you have only a few volume licensing product keys to change, you can use the Activation Wizard.
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
1. Click Start, and then click Run.
2. In the Open box, type regedit, and then click OK.
3. In the left pane, locate and then click the following registry key:
HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsNTCurrent VersionWPAEvents
4. In the right pane, right-click OOBETimer, and then click Modify.
5. Change at least one digit of this value to deactivate Windows.
6. Click Start, and then click Run.
7. In the Open box, type the following command, and then click OK.
%systemroot%\system32\oobe\msoobe.exe /a
注：在 system32, oobe, 和 msoobe 前麵各有一個back slash，文學城上可能顯示不出來，別忘了加上，不然不工作。
8. Click Yes, I want to telephone a customer service representative to activate Windows, and then click Next.
9. Click Change Product key.
10. Type the new product key in the New key boxes, and then click Update.
11. If you are returned to the previous window, click Remind me later, and then restart the computer.
12. Repeat steps 6 and 7 to verify that Windows is activated. You receive the following message:
Windows is already activated. Click OK to exit.
Click OK.
Install SP1 for Windows XP.
If you cannot restart Windows after you install SP1, press F8 when you restart the computer, select Last Known Good Configuration, and then repeat this procedure.
Use the Activation Wizard:
If you have only a few volume licensing product keys to change, you can use the Activation Wizard.
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
1. Click Start, and then click Run.
2. In the Open box, type regedit, and then click OK.
3. In the left pane, locate and then click the following registry key:
HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsNTCurrent VersionWPAEvents
4. In the right pane, right-click OOBETimer, and then click Modify.
5. Change at least one digit of this value to deactivate Windows.
6. Click Start, and then click Run.
7. In the Open box, type the following command, and then click OK.
%systemroot%\system32\oobe\msoobe.exe /a
注：在 system32, oobe, 和 msoobe 前麵各有一個back slash，文學城上可能顯示不出來，別忘了加上，不然不工作。
8. Click Yes, I want to telephone a customer service representative to activate Windows, and then click Next.
9. Click Change Product key.
10. Type the new product key in the New key boxes, and then click Update.
11. If you are returned to the previous window, click Remind me later, and then restart the computer.
12. Repeat steps 6 and 7 to verify that Windows is activated. You receive the following message:
Windows is already activated. Click OK to exit.
Click OK.
Install SP1 for Windows XP.
If you cannot restart Windows after you install SP1, press F8 when you restart the computer, select Last Known Good Configuration, and then repeat this procedure.
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