Returning for a moment, if I may, to my original issue here - ie my Windows7 set-up going slow, I would welcome some insight as to why.
I have been running Photoshop CC, and it is with this program that I am having the greatest problems with speed. I expected to have to wait a while as PScc worked with quite large files, but it has been taking a stupid amount of time to even load a photo into the workspace, and even longer to undertake some of the processing. Because of this I checked the Windows Task Manager/Performance monitor whilst PScc was undertaking a job, expecting to see the CPU running at 100% and looking red in the face. On the contrary. It registered CPU usage at 1 or 2%, and Memory at about half-way up the graph. I can't claim to understand a great deal about these things, but shouldn't the CPU be working harder than 2% whilst trying load my photo into its workspace?
Any ideas/insights/explanations for me?