From that runscanner log it looks like two more of the problems are gone. I need you to go to your event viewer just as you did before, but this time instead of saving the logs, select clear log. It will ask you if you want to save them, that is up to you. Once you have cleaned both of them, reboot the computer. The play around with the computer and then get me a new set of the event viewer logs. You will be able to attach them here this time. They will be much smaller.
About the default programs, open that up and then select associate a file type or protocol with a program. I am assuming the pictures are jpg's? If they are scroll down to jpe , jpeg and jpg and select each on, one at a time and click the change program button. Select the program, or you may have to browse to the folder of the program before you can select it, make sure the checkbox is checked, and then click OK. From then until you change it again, that new program will open any file of that extension that you try and open.