I downloaded the Windows 8 consumer preview from Microsoft’s website. I have downloaded 64-bt version in ISO file format. During installation, it asked me for the product key and I entered DNJXJ-7XBW8-2378T-X22TX-BKG7J and it started verifying this product key to see if it is right. But after some minutes, a message popped up saying that product key I entered couldn’t be verified at that moment and asked me to retry after some time. I tried again and again, maybe for seven to eight times, but failed to get the product key verified. Can somebody tell me what do I do now?