I know what you're thinking.

"there are about a thousand threads with the answer to this."

Well, I think my problem is a little different.

My computer is by no means great, but it should be good enough to run shaders. Is it really that graphically hard? Because i've been able to run games with better graphics then that. Or is it something else?
If anyone could offer help/advice or just general info, i;d appreciate it much. Thank you.

Read here and if you got a laptop then here too.

As you said there are hundreds of threads like this, just use the search button.