I am still working with MS about the Asus U43F laptop being unable to update to Windows 8.1. I have been on remote access for another 4 sessions since they kicked the problem up to an advanced group of MS troubleshooters. As I watch the remote access of my laptop, I see them being focused on drivers as the problem but anything they do hasn't resolve the problem at this time. They have been looking at log files and other installation files, running MS diagnostics and using their keys to install 8.1.
I have also contacted Asus technical department and they are clueless about the problem. I don't think they will be helpful in solving the problem.
I have noticed on several blogs that other laptop brands have this exact problem which is probably being researched as well.
Has anyone heard of someone who has successfully upgraded to windows 8.1 with this U43F asus laptop, would like to hear from you. thanks