So I thought I could figure this out in one go, apparently not 

I'm rebuilding an old desktop pc for my kids with some basic components - i3-2100, 1155 mobo, 8GB ram, 2GB graphics card. I bought a licence for Windows 10 Pro, installed media creation tool onto a usb, and tried to install windows onto a completely blank (formatted) HDD. Since the HDD is blank, I can't upgrade or update windows, it needs to be a clean install. However, the licence key doesn't work, checking with the seller now (bidorbuy) what the issue is. I've used this buyer before for other licence keys, so pretty sure the licence is legit.
Is there a generic licence key that I can use to install windows 10, and then upgrade using the licence key which I bought? What other options are there for me to be able to install windows without a licence key (7, 8 or 10)?
I'm at work now, so will only be able to try out suggestions when I get home.
Thanks
I'm rebuilding an old desktop pc for my kids with some basic components - i3-2100, 1155 mobo, 8GB ram, 2GB graphics card. I bought a licence for Windows 10 Pro, installed media creation tool onto a usb, and tried to install windows onto a completely blank (formatted) HDD. Since the HDD is blank, I can't upgrade or update windows, it needs to be a clean install. However, the licence key doesn't work, checking with the seller now (bidorbuy) what the issue is. I've used this buyer before for other licence keys, so pretty sure the licence is legit.
Is there a generic licence key that I can use to install windows 10, and then upgrade using the licence key which I bought? What other options are there for me to be able to install windows without a licence key (7, 8 or 10)?
I'm at work now, so will only be able to try out suggestions when I get home.
Thanks