Windows 10 v. 1803 slow startup after reinstall, maybe Services?

I naively removed window 10's ability to install updates and had to reinstall Windows v.1803. The install seems to be very successful in that the computer didn't loose anything that hold dear, but its start up was extremely slow. I now note that on start up, tons of resources are being used by Compatelrunner.exe. Furthermore, for this service and for other services (viz., conhost, csrss, ctfmon and dasthost) when passing the cursor over them, shows: "Path: Error opening process." Working with services is beyond my level of understanding. So, I ask, how should I handle this situation? Thanks.

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