How helpful.....I just joined this forum today to ask this very same question. It doesn't seem to matter how far back of a restore point I go, I take 40 minutes of my day to merely get this same exact error message.
I will say that after doing this task over and over again ( I never get a full restore, it always fails), the laptop will work pretty well for a while, but then within a week or two get real sluggish. Go through all the avast and malwarebyte checks with no problems, except one. Some files appear to be password protected so can't be scanned. Would this be a related matter?
win7 home premium 64bit
ramprat15