You need to have a blank 8GB or 16GB Thumbdrive Handy and use the Windows Media Creation Tool. That's right, a laptop that has no working WiFi after the update. Case in point: I upgraded a friend's 2012 Sony VAIO Laptop to Windows 10. Once Caveat, If there is some sort of driver that isn't compatible with Windows 10, and there isn't one available, you are screwed.
As far as the Dell 8700 handling Win 10, it should.if Windows 7 works on it, there is a good chance Win 10 will be fine.
