If you've upgraded to windows 10 through a previous version of Windows, then I would strongly suggest creating a Windows 10 install disk on a thumb drive, back up all your documents, and then format the drive and do a clean install.
They've almost gotten the upgrade process to a point where it is fully reliable, (and it has been very reliable all the way back from the old windows 1 or 2.x days, assuming you never really used any third party software.) but we still have too many third party developers 'being clever' with their software, and we're still prone various errors that crop up from different things.
Upgrading now, before you've spent months finding different little settings and such that you like on Windows 10, will save you time in the long run.
Good luck with your system.
Canon EOS 7D | EF 28 f/1.8 | EF 85 f/1.8 | EF 70-200 f/4L | EF-S 17-55 | Sigma 150-500
Flickr: Real-Luckless