I kind of recall that happening to my PC but I don’t exactly remember what I’ve done to resolve it.
Try this maybe: https://support.microsoft.com/en-us/kb/929833
Also check the device string in the registry, not sure related but just to eliminate causes: http://forums.sandisk.com/t5/SanDisk-ReadyCache-SSD/ExpressCache-is-no-longer-working-after-updating-to-Windows-10/m-p/342053/highlight/true#M1717
