Brother called me over to check out his PC as it is exhibiting similar behaviour as mine awhile back. sptd file is up to something. Will commence 8 step procedures for now. When PC is powered up, it just goes in a continuous loop to a Compaq PC recovery screen when F10 is pressed. Then a window comes up to commence Windows PE recovery. Didn't allow to go any further and booted into Safe Mode with sptd file ignored.