|What phil22 said.|
If it's a laptop, look on the bottom for a white label that has both the serial and the model number and that's the model number you will use, not the model as listed on the top of the laptop.
If it's a PC, the label will be on the back.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.