Buy — Windows Oem License

: Microsoft does not provide direct technical support for OEM copies. As the "builder," you are responsible for your own troubleshooting.

: The license is permanently "locked" to the first motherboard it is activated on. Unlike a Retail license, you cannot transfer it to a new computer later. buy windows oem license

For personal use, buying and using an OEM key is generally considered "grey area" but not illegal for the end-user. Microsoft's EULA (End User License Agreement) technically states OEM keys should be sold with a fully assembled computer system, but they rarely, if ever, penalize individual home users for using them on custom builds. : Microsoft does not provide direct technical support

: Sites like Newegg or Amazon (when sold directly by the platform) offer legitimate OEM "System Builder" packs. These usually come as a physical DVD or a scratch-off key card. Unlike a Retail license, you cannot transfer it

: Enter the 25-character OEM key during the installation process or in Settings > System > Activation after Windows is installed.

You can find OEM keys through various channels, ranging from official distributors to "grey market" resellers.

: Marketplaces like VIP-SCDKey , Keysfan , or Kinguin sell digital OEM keys at deep discounts. These are often "grey market" keys—surplus licenses from other regions or high-volume buyers. While they usually work, there is a small risk of the key being deactivated later if Microsoft deems it a violation of terms. How to Use an OEM License