I am seeing a number of posts about things not working and flags in Device Manager after a Windows 10 upgrade.
What is happening is that as part of the process Windows is "updating" a number of drivers that it does not need to (have yet to see an 8.1 driver that does not work with Win 10).
The Intel DPTF is a case in point. The latest Acer driver is 6.2.9200.30457. Windows 10 loader 7.1.0.20. Rolling back to the latest Acer drive fixed the problem.
So if things do not work, I'd suggest setting a restore point and then reload the lastest 8.1 driver set from support.acer.com. It may even work.
ps I had to force feed the 6.2 DPTF drivers but it worked
pps pehaps this shold be a sticky.