Windows 10: Problem W10 key activation, microsoft acc linked to 2 devices

I'm unable to activate a W10 pro key on my notebook (error code 0xc004c008) and I think this is due to my microsoft account being linked to my main PC aswell as my notebook. Can I somehow change my microsoft acc on my notebook ? The windows copy for my notebook is a different one compared to the one on my PC (btw first post so sorry if there are any problems with the post)
Imgur: The magic of the Internet

:)

 

Important W10 activation key questions left unanswered by Microsoft

A little info on this.
Your keys from TechNet or MSDN are and can be Retail, OEM, Static Activation, Multiple Activation, Custom, or other.
You can go to your TechNet site and sign in.
Then click on the "Export to XML" link at the top right hand side of the key chart.
When you open this; there will be a column the shows the "Product Key Type".

Example (Keys block out, of course):




Here is an MS chart of the Key meanings from Product Keys and Activation for MSDN site... the key meaning, also, applies to the now defunct TechNet Keys.

Chart from the page:






EDIT:

You do not need to be on a MS account any longer... you can be just a local user.
As long as you are connected to the internet they can find you.

Also, this may help explain some... as, it applies to the activation of Windows 10, too.

Microsoft quietly rewrites its activation rules for Windows 10

Click link above to read more.

 

Important W10 activation key questions left unanswered by Microsoft

Not only that, you can check your M$ account and see what devices are listed there, so you know if you can do a clean install or not. Do the upgrade, get it activated, verify that it is listed in your account, then feel free to do a fresh install without activation issues ever.

 

Important W10 activation key questions left unanswered by Microsoft

You don't get a key, and if you use a keyfinder utility it just returns a generic public key that won't activate. They have updated their activation system with Win10, the OS will attempt to activate without a key and match your hardware ID to one stored in the activation servers. If the hardware ID matches your copy will activate with no key required. According to the FAQ, if you make "significant changes" to your hardware you may have to contact Microsoft tech support.

According to what I've read, if you have a retail version your upgrade is also retail and can be move between computers. That is where contacting tech support comes in.

Part of their upgrade licencing for all their upgrade versions has said the key becomes invalid. I would assume it is buried in the upgrade license for Win10 as well.