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חיפוש בגוגל למשהו כמו change key windows xp יתן לך לינק לאתר של מיקרושיט עם הסברים.

יש לי איזה משהו ישן תבדוק אותו:

Change Activation Key

If you are using Windows XP Corp Edition with Key (FCKGW-RHQQ2-hehe) follow these instructions:

1. Run a system restore to create a new checkpoint in case you need it.

2. Run regedit and go to: HKey_Local_MachineSoftwareMicrosoftWindowsNTCurrent VersionWPAEvents, on the right double click on "oobetimer" and change at least one digit of this value to deactivate windows.

3. Choose run from start menu and type in this command: %systemroot%\system32\oobe\msoobe.exe /a to get the activation screen and go to the second option which is activate by phone.

4. In the new screen choose the option to change product key, and type in the new product key (your corporate one only).

5. If it brings you back to the prior screen after entering the new key click remind me later and then reboot.

6. Close that window, reboot your system and enter the command in step 2 for the second time to verify your activation, you should see "windows is already activated".

7. Now install SP1

8. If you have done this wrong or without a valid key you will not be able to boot. hit F8 and select last known good configuration.

תודה

היה לי את אותו מדריך רק שמה שהיה צריך לכתוב בהפעל השני לא היה נכון..