So I did my 2nd upgrade of Windows 10 this weekend, this time on my Dad's laptop and ran into a really weird issue. After the upgrade everything seemed just fine, rebooted and all the sudden got a BSOD just like this one as soon as I tried to login but eventually I would not get it after several restarts and was able to get in. Started searching Google and first few things I found reference an issue with Bluetooth so I disabled all the Bluetooth devices and services, rebooted same issue. Ran Chkdsk, no errors so completely at a loss as I knew it was something hardware related causing but couldn't figure out what. Then after digging more into some stuff on Microsoft's website found exactly what it was. Someone else who also had a Dell laptop had the same issue and found that rolling back the touchpad drivers fixed it. Apparently the touchpad drivers you get straight from Dell was the issue, if you rolled back to the generic Microsoft touchpad driver the issue goes away. Made sense because figured out that touching the touchpad to get to the login prompt was when it was happening, if I plugged in a USB mouse I didn't get the issue.
Just another quirk for W10 to look out for I guess