Hi again Pat,
I checked the permissions in my Temp folder and there were none. So I ticked all the boxes, but when I ticked OK I got the permission denied message again, so the problem is still tied to me not having administrator privileges. Strange thing is that even though I was denied permission, the boxes still stayed ticked. However nothing has changed as far as my problems are concerned.
It would appear to me that the answer is to get my administrator privileges back, but I have been unsuccessful in that so far. I purchased a complete PC from a good supplier but the Windows 7 setup disc that came with it does not have the "Repair Your Computer" function on it, which I understand would allow me to sort out my administrator privileges? When I rang Microsoft and asked if there was any way I could obtain that function, by download or otherwise, they weren't at all interested as I hadn't purchased Windows 7 directly from them.
As for downloading Adobe Reader via the MSI folder, I don't need to do that because when I recovered my backup from an earlier period I once more had Adobe Reader. I can use Adobe Reader to open a PDF document but it would appear I must have administrator privileges in order to print a PDF document, which was how the situation was before I decided to uninstall Adobe Reader and download a new version. I can print any other type of document so obviously Adobe demands more before it will allow printing.
In the early stages I also downloaded Foxit Reader, as I had read good things about it, but again, for the same reasons, I could not install it.
I have googled "problem with loss of admin privileges" and got a lot of hits. I will try some of the suggestions that don't appear too complex, but if they fail I will go back to the supplier. I have to sort it. I have seen suggestions about starting a new account but am not sure what to do there, or indeed, if I should do that.
Thanks for all the attempts to help me so far,
Barry