What kind of basic info goes along with this error, like which version of Windows? Did it only happen on an NTLite image or does it happen on untweaked installs too, etcetera. Traditionally lsass issues are associated with viruses, though this same error has come up due to a few different Windows Updates that Microsoft had to rollback/fix. It also seems to be an error people encounter on rare occassions in games, allegedly some fixes are to disable Gsync and/or enable XMP in bios, and if either of those actually work (I doubt it) then it's almost assuredly a bug.