Thanks for replying. The issue that I'm talking about is the whole programme so basically it's both.
I uninstalled then reinstalled because I was already having this issue before I took the decision to uninstall it. I still have the issue which has been evident for about a year now. Restarting the PC, shutting the PC down or using the Task Manager seems to be the only way to close it down.
I have had PSE 4 and 11 prior to 18 and both have been great however 18 was the only one I bought as a download, the others were disks.
I can find no logical reason for this. One day it was fine the next it wouldn't close down in the normal way.
Try contacting Elements support. You can start a chat session by clicking on the blue Contact Us button under the Support menu at Adobe.com. Or you can contact Support by telephone using the numbers listed here: https://helpx.adobe.com/contact/phone.html. If you are willing, Support can take control of your computer and can get a better idea of what is happening on your machine.