I am experiencing a change in the way my PC works. If I do Start>Computer and then click on, say, my C: drive (but it happens for all drives) I get that darned message "The file does not have a program associated with it for performing this action....etc". If I right click and choose "open", then I get the list of subfiles as expected if I had just clicked on C:. Clicking on any of these subfiles gives the same error message, but rightclick>open works again.
In summary, I cannot open files by clicking on them, but right clicking and choosing "open" does the job.
Something has happened, but I cannot find a solution particularly since I am not sure what is the extension of a file such as C:
Any help greatly appreciated! (this is on my Windows 7 32-bit machine)