Why won't Memory Integrity turn on???

Question

In Core Isolation, Memory Integrity will not turn on. It says there is an incompatible driver, but there's not. Here’s what I’ve done: (1) reviewed the list of incompatible drivers, deleted each one from its file location, emptied the recycle bin, and restarted the system; (2) downloaded and ran Autoruns, deleted every flagged driver (except the Windows drivers that can’t be deleted), emptied the recycle bin, and restarted the system; (3) ran the disk cleanup utility, checking all of the boxes, emptied the recycle bin, and restarted the system. But Memory Integrity still will not turn on, and it is still blaming incompatible drivers, although none are listed. I’m stumped. How do I get Memory Integrity to turn on?