Have a new Asus laptop and wanted to go from 8 to 8.1. Downloaded the upgrade in the form of a disc image, but when required to enter the product Key it is rejected. It is a new computer with pre-installed software. Any ideas? Thanks.
It's not clear what the problem is, you have a new Asus laptop with Windows 8 on it and you are trying to install Windows 8.1 onto it from a disc image?
The product key you are entering is probably for Windows 8 OEM only (a product key for the pre-installed software) and not one for a "full" version of Windows 8 / 8.1.
The solution is to wait until Windows 8.1 is available for free and download and install this on your Windows 8 machine.