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    New Member

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I tried to resore my computer to "factory original". I got a screen asking for my 25 digit product id from my Certificate of Authenticity. My Dimension 2400 is years old and i can't find the numbers i need, is there a work around for this or am i out of luck?
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    Malware Removal Dude

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The codes are typically printed onto a sticker on the back of your computer. It usually says something like "Windows XP" and the 25 letters and numbers are right underneath it.

If you don't have that sticker you will probably have to purchase a new one, or talk to a Microsoft representative about it for other options.
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    Tech Staff

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Look on the lower rear corner of the left side panel. That's where Dell usually put the COA stickers on Dimension series machines. On laptops, the sticker is nearly always on the bottom of the machine.
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