Member Avatar for snakeplyr

I will be upgrading my processor in a while and I'm wondering if the change of CPU will force me to activate XP again just like when you upgrade mobo.

Last time that happened was horrible. I ended up having to move all my stuff to a temp HDD then reinstall XP, then move back all stuff and install programs, and..., etc. IT WAS HORRIBLE

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Windows XP decides activation by building a hardware “signature” from several components (motherboard/BIOS, disk controller, network adapter, and others). A CPU swap by itself is low‑weight in that signature, so many people never get reactivation after a straight replacement. Bigger changes — especially a different motherboard/chipset or swapping the primary storage controller — are what usually force XP to ask for activation again. This explains the mixed experiences noted by , and .

Before you touch anything, do three practical things: 1) Identify the license type — retail, OEM, or an academic/volume copy from your school — because transfer rules differ. 2) Record the product key or COA sticker and, if needed, use a key‑finder (Belarc, ProduKey, etc.) to capture it. 3) Make a full disk image (Macrium Reflect Free, Clonezilla, Acronis, or similar) and verify the image boots on spare media so you can restore quickly if something goes wrong. Also check that your BIOS supports the new CPU and update it if the vendor recommends.

If Windows does ask for activation after the swap, first run the activation status dialog with oobe/msoobe /a and try online activation. If that fails, choose telephone activation and have the installation ID and product key ready. If the copy came from the school, contact their IT first — it might be a volume key tied to their activation infrastructure and they can advise or re‑authorize it. Phone activation typically resolves legitimate hardware‑change cases without reinstalling Windows.

License caution: OEM keys are generally tied to original hardware, retail keys are transferable, and academic/volume licensing can have its own rules. If the copy isn’t legitimately yours to keep, arrange a proper license to avoid future problems.

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Member Avatar for Bob_180_Bob

That question is like "how long is a piece of string?" sometimes when you do work to your PC Windows want to be activated again and then other times it just works. I think the main thing is how close to the original the modification is. If you use a similar CPU it may be OK.
I have replaced a part on one PC and had no problem, then replaced the same part on another PC and Windows needed to be activated again.
While it is a pain, a backup of your data is always recommended when doing any major work on your PC. If you have another drive the same size, there are plenty of free programs on the net that will allow you to copy an image of your drive to another and back again. (Only a few will allow from and to a different size drive.)

Member Avatar for caperjack

if it have to reactivate ,you simply call microsoft and explain the chang and they will give you a new activation key ,no need to rteinstall windows to do this .i have done this to my maching coultless times because i use to use it as ameants to test cps from customers computer ,have reactvated my winxp several times

Member Avatar for snakeplyr

This installation was obtained from my old high school so it has a academic license (or something like that). Can I or they get in trouble?

Member Avatar for caperjack

This installation was obtained from my old high school so it has a academic license (or something like that). Can I or they get in trouble?

If it legit they [MICROSOFT]will know ,when you call to activate it ,if you need to !microsoft will just tell you it not ok, they will not rush out and arrest you. lol

Edited by caperjack because: n/a
Member Avatar for Adamsappleone

If you're upgrading from Intel to Intel or AMD to AMD, you shouldn't have a problem. Just do the change and start your machine, your OS will pick up the new hardware and install as needed.

If in the event, you do need to re-activate, (which I doubt, I have done it many times) just follow caperjack's suggestion about calling M$ and they should issue another key.

Member Avatar for khakilang

Usually there is no problem that I came across only if you change motherboard with different chip set.

Member Avatar for snakeplyr

Good info. Thanks guys. (not sarcastic; I said thanks once and some guy accused me of being sarcastic)
I feel more confident with this upgrade now

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