I tried a different drive before posting and it didn't fix it. :)
I installed 8.1 last night and it was still thrashing so I left it d/ling 100 or so updates when I went to bed, got up this morning and it's al good. Memory is at 52% and disk is at 0% when idle but jumps up when I do something (which is normal) then drops back down again. So all is good, will restart and see what happens.
OK restarted and it's back to high memory-HDD use 99% so if I had to guess I'd say it a memory intensive windows process that is cause the swap file to be flogged because of the low RAM amount? At a guess. Will leave it and see how long it takes to settle. Will try some extra ram when it turns up as well.
Removed HP support assistant and that reduced the thrashing down to about 5 minutes. :)
Edited by Director, 21 February 2016 - 09:30 AM.
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