Moved virtual memory to D drive. Rebooted. No change.
There is a sizable file called hiberfil.sys hidden in C drive. I wondered if it was hibernate data and if it would be at the annoying end of the disc. Can't budge it of course.
Can one turn hibernate off in W7? Looked via Search, can do lots of things, but not that...no help at all.
De-fragged drive. Made quite a difference - especially when assessing the need to...de-frag