- How, exactly, do I delete this unneeded junk from my hard drive?
What i did to delete this folder was create a bootable Ubuntu flash drive and delete it using ubuntu since it doesn't have the restrictions windows imposes on its folders.
Just be sure that you do not need anything particularly from that folder and you should have no problem deleting it. I have already done it and my windows is in perfect working conditions.
You might want to reinstall the driver you think is related to the picture you showed in the post after the deletion just to be sure.