Ok Hazelnut, I had a look at the C drive (SSD) using Treesize, obviously Windows OS occuopies 23gb - but the main cuprit that you cant see thru explorer is the System Volume info and then theres the Programme data. Strangely, after running Treebite to view the drive content the available space is now 16gb?? Previously the Storage Sense (system restore) was set to 99% so I reduced it to 25% perhaps that made a difference
anyway you can see the snip of the C drive contents and if it stays at 16gb free then I'll be happy
Cheers