Hello! I have bought windows XP installation cd. Everything went smoothly until I entered product key. I got message that product key is invalid! How that can be possible when I bought XP installation CD yesterday? I am running out of idea what to do. Please, advice me! Thank you in advance!
Hello! That is happening, because someone has stole product key and already used it to register its illegal copy of windows.You need to call Microsoft technical support and explain them your problem. Also, you should keep bill for bought operating system. They will send you new product key, do not worry.