Saga Lout :
You need a larger disk and a SSD will either be smaller in capacity than your 500GB spinning disk or it would cost a fortune. You could buy a SSD and install the Windows system on then use the existing disk in a USB caddy. Wipe thet system of iut and you'll have plenty more space.
Have you used Windows cleaner to free up some space? In a Command form, preferably as Administrator, type CleannMgr and hit he Enter key. A small form pops up and calculates how much space you can free up. Accept the offer to clean it all off and see how much you will gain.
Thanks for the reply Saga. Why do you think I need a larger drive? To clarify, when I say that disk is at 100% in task manager, I believe that means it is utilizing all of it's read/write capacity, not that the drive is full. I'm currently only using about 130GB of the 500 GB available on my current drive, so not limited on space. I was just thinking that the hard drive is slow to read/write with a standard drive at 5400RPM, and thought a SDD might address that. With that said, I can probably clean up the existing drive.
Another thing that's not clear to me is what is using up the current 130GB of space. My documents and pictures only add up to about 6 GB and I don't have that many programs installed.