Heya, I have windows 7 64 bit installed and loaded on my computer now, but it says my product key is not valid. I used this very same key to install it from the same CD to the same disk before, but for some reason it is not working now.
The windows 7 OS is from a upgrade pack, and currently the 32bit version of it is installed on my HDD, I have no idea what to do, please help?
I just did exactly like last time and installed the 64bit OS on my SSD, while the HDD is connected to the computer.