Yes if you have Gimp set to open the format of the image file you right click on, you will have a right click (shell) option to edit it or open it with Gimp.
You can set Gimp to do this simply by right clicking any image and select properties, opens with and select change, choose Gimp from the menu.From now on Gimp will associate the format with itself.

REGARDLESS of this however Gimp should open the image if you have Gimp open and go to File>open and browse to the image.
I would try restarting the laptop and see if the images are redrawn.