After repairing Windows XP or after replacing a motherboard, you might receive this error before logging in "This copy of windows must be activated with microsoft before you can log on."

  • Download this patch which works for Windows XP Home and Prof.
  • Reboot to Safe Mode.
  • Open the downloaded file and double-click AntiWPA3.cmd
  • Click Yes when it prompt.
  • That should be it.
  • Restart the computer and you should be able to login now.
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For the sake of XP installation continuity, we can use the default product key inside the XP CD.

You can find the product key by browsing:

<cd-rom drive letter>\i386\unattend.txt

At the bottom of the file, you will find the product key. One of the common product key is

CD87T-HFP4C-V7X7H-8VY68-W7D7M

 

After finishing the XP installation, you need to activate Windows and use the original product key of the computer.

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NOTE: Performing procedures below may corrupt your motherboard's BIOS if not done properly.  I don’t take any responsibility for anything that results from following these instructions (good or bad). You’re following these instructions at your own risk.

Let's start - this instruction is originally from HP Forum created by Justin Maslack. Download the Crisis Recovery file here.

I had to apply these instructions as I have Windows XP installed in my HP Pavilion dv2000 (dv2533) laptop. After 1.5 years, my motherboard died, I had to replace it and re-downgrade BIOS to version F.13. The seller where I bought the motherboard (PCSuperFreak on eBay) flashed the BIOS with the latest version (version F.2E at that time).

When I downloaded BIOS version F.13 and tried to install it, it won't allow it unless I have Vista installed. So, I need to convert the BIOS file to a bootable floppy version using Phoenix Crisis Recovery. I will not tackle how to create a Crisis Recovery Disk in detail. I attached the file compiled by Justin Maslack which can be downloaded here.

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