Disk Usage

I've just recently replaced my laptops ram (upgraded 8gb to 16gb) and my hard drive to an ssd yet i still get one of the same issues i had before, that my disk usage is very high. I'm not using any files that i had previously so i assume its a hardware thing? any help would be great.

I bought a Hp Envy Laptop last year and it has all ways been slow every now and then weirdly stopping working and it was only today I noticed that my Disk Usage is constantly 95% and above. I used to work in a computer shop myself doing repairs so I regularly defrag and clean my files on top the...