blender is not using the GPU as my graphics card I have a 8.26GB total graphics card memory but blender is not using the GPU as my graphics card has 128mb of VRAM but my shared system memory is 8.13GB, is their any way or an addon to help me change this as I would like blender to render on my GPU rather than my CPU. Would appreciate any help.
The intel 520 is an integrated graphics chip, which means it resides on, and shares power with, the CPU.  You're better off using CPU on this machine.
The total available memory is your 8GB RAM plus 128 MB dedicated for video.