Prepare to read some bad english, i wil try to do my best.
When i was younger i bought The Witcher 2 and installed it on my old computer (this computer has been sold now). Now i would like to play the game agaiN on my new computer. This computer has no "cd reader", so i decide to add with GOG by entering the key; but when i want to enter the CD Key, GOG tells me that he doesn't recognize the key : "it doesn't look like a GOG key" something like that. I tried to enter the key on steam, but same problem. I even tried on Origin (yes i know that's useless), same problem.
Does someone has any hint on how to instal my game ?
Will I have to make an image of the installation CD on a USB key ?
Thank you for your answers my friends :D