in My computer (Window Explorer), click Tools--> Folder Options --> File Type --> JPG (JPEG Image),
click "advance" button, Select (highlight) "Open", then click Edit button
Check the application to run Jpeg. It should be something like:
rundll32.exe C:\WINDOWS\system32\shimgvw.dll,ImageView_Fullscreen %1
it may be missing a shimgvw.dll file.
What kind of computer you have?