I had exactly the same problem as you. I solved it by (unfortunately) formatting my drives and installing W10 from a dongle.

Hi all. I know this waking up an old thread but I installed W7 Ultimate and it upgraded to W10 Pro. All processors are now being used. Thanks for your help!

I have W10Pro and I've just searched my updates. Neither of them are installed on my system.

I was thinking about something else when I wrote the post. I had Win7 Ultimate installed and that showed all my sockets. I have since re-installed everything (since my start button refused to work)...

HI all! I've searched in the forum and can't find anything specific to this so I'm afraid it's a new thread.

I have a Xeon system that uses two CPU's (X5450). When using Windows 8.1 both CPUs...