Invalid cd key windows XP

Is the disc scratched?

If so, polish it starting at the centre and rubbing towards the edge, using metal polish (Brasso is good).

Buff off the polish when done in the same direction.

You will have to purchase this code from a vendor. These regristration codes are not free.

Sorry you wont get one from here.

hi,
i need a pruduct serial number of this game to.
pleasse can you help me?

Specify the problem to acquire help.

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About all of them are shown here: http://www.cheatcc.com/ps3/redfactionguerrillacheatscodes.html

Well contact THQ for assistance. they owe it to you since you bought their game.

It could be your hard drive is too full and you might need to delete some things or it could be a defective game.

I would be extremely surprised if this turned out to be a valid copy of XP. Shrink wrap is easy to do. Someone has already used your product key which Microsoft has now registered to a different computer.

And yes, when you submit it the message is that it is invalid which means already in use by another computer.

Microsoft never gives the error message "this product code is already in use". They only say it is invalid.

I've installed XP tons of time and even had a few times where the license belonged to another computer. When that happened, the invalid error message is what I got.

I'll make another guess and say you did not buy XP from a computer store, but instead from an individual. A reputable computer store should be able to help you with your problem if you bought from one.

Honest1abe