I've learned over the years that it's generally best to do an OS upgrade *before* you start installing much software -- especially stuff like antivirus. OS upgrades also have a better chance of succeeding if you start with a fairly "vanilla" configuration by switching to generic drivers rather than those specific to the hardware you're using (s the specific drivers might not be immediately available in the standard install). That being said, you might have more success starting with a clean install of Windows 7, then upgrading it to Windows 10, following that with installation of whatever software you're going to use -- effectively starting with a "new" computer and upgrading the OS.