Windows 10: I swapped my motherboard in my pc and didn't make a recovery usb. What do I do?

I was going to build a pc for my nephew, but mistakenly bought a full atx motherboard instead of a micro. I noticed that my motherboard was a micro atx board though and noticed the new board I bought was really nice, so I just swapped it so that my nephew could have a working pc but now I can't reinstall my windows 10 because it says I need a usb or disc. I really don't know what to do because my old motherboard is currently in my nephew's pc and I didn't know I needed recovery media to reinstall windows 10. I thought I just needed the key which I already have.

:)

 

Data recovery software

The Big Useful List Of Free Useful Programs To Use Usually For Free

click the top spoiler and then look down to recovery.

All of the suggestions in the old threads were consolidated into that one.

 

Notification didn´t appear

Windows 10 has ben released for 1 day and a half,and I didn´t get the notification for installing.I reserved it.Can anyone help me?

PS I am running Windows 7 and it´s up to date.

 

Swap from Asus board to Gigabyte

I have swapped motherboard and I'm stuck with the Asus Asio.sys BSOD. Have found suggestions to re-install windows to change to Gigabyte motherboard software. Have tried from USB but can only get the option to install and delete files which seems a bit extreme,
isn't there a keep files option any more?

** Moved from : Windows / Windows 10 / Windows update, recovery, & backup / PC **