go to windows explorer, navigate to the folder that holds your pictures from the camera, right click it any photo, open as, then select always open with (or similar wording)
you should be able to see your camera in windows explorer, open it, and navigate to your pictures folder, then you should be able to delete from there. you can also delete the pictures from the camera itself. look in the manual.
Canon PS SX130is
Just purchased and had hooked up, an HP Pentium Slimline 400-434 CPU.
I installed the Canon software on the HDD, but the OS (Windows 8.1) defaults to its own program.
Is there any way for me to set Canon's software to be my default?
I am unable to get my images off the camera - neither to copy or delete when finished transferring from camera to CPU. This may be a problem that will disappear when I can get the Canon software to be primary.

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