If you're doing the upgrade, there's bound to be issues. Essentially it's taking your Windows 8 PC and moving it to Windows 10, but the problem is that there's likely a program/service that you run in Win 8 that's not compatible with Windows 10.
Had I caught you before you did this, I'd recommend using a disk imager (i.e. Macrium Reflect, Drive Cloner Rx, etc) to back up your data and to a clean install. Since that's well past the point of being doable, the next best bet would be to do a fresh install of Windows 10. The good news is that your Motherboard stores your Windows license information, so it should activate automatically.