>>601710What you should have done is install a third-party XHCI driver (or a supported OS) first, then change the motherboard.
What you can do now is:
- put the old motherboard back again, install an XHCI driver, then put the new motherboard back again
- go buy a USB 2.0 (EHCI) add-in card and use it to install drivers for the rest of the ports
- if you have working network and already enabled it beforehand (Windows 7 so I'd be surprised, but who knows?), log in using remote desktop from another computer
- if your computer's set to auto-login, boot from Windows 10 media, and add the driver installer to your startup folder. Make sure to run it non-interactive (/q, usually) so it doesn't ask you a question you can't answer
