So the problem is that i cant locate the content thats filling up my computer - i use cc cleaner & Iobits cleaner but still there so much space being used and i cant seem to find what its used on!
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5.44GB used on Progams (x86)
38.6GB used on Programs
All in all i have 221GB on my C drive
still theres only 2.58GB free space
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All of my file libraries and other big files have been moved to extern server drive.
Hello, I suggest you try Windir Stats.
Very usefull to quickly locate the kind of hidden data you are seeking.
Don’t know if this linked to it, but I had enormous amount of data in the Unreal Data cache
Regards,
Also take a look at this article: ://www.pcadvisor.co.uk/how-to/storage/how-find-out-whats-taking-up-space-on-your-hard-drive-3580427/ 
Windir stats is indeed a very useful piece of software, though in my case it is always UE4 files that take up the most space.
Get bigger drive or second one for unreal. It is great to have one hdd for unreal only together with all source files (meshes textures etc).