If your computer came with Windows 8.1 preinstalled, the activation key is likely embedded in the motherboard's and will automatically activate upon reinstallation. For other cases, you can try:
If your computer is still operational but you are preparing for a reinstall, you can retrieve the key from the registry: windows 8.1 activation key
If your computer came with Windows 8.1 preinstalled, the activation key is likely embedded in the motherboard's and will automatically activate upon reinstallation. For other cases, you can try:
If your computer is still operational but you are preparing for a reinstall, you can retrieve the key from the registry: