The issue seems to be the video card itself since you have downloaded and installed the most recent drivers available from Nvidia.
We've wiped the drivers clean and started from scratch
Tested memory with no problems there. Ran sfc scannow now with no resolution
Ran chkdsk .r with some resolution but it didn't continue.
Give this a try and see what it shows.
How old is the video card?
Run hard drive diagnostics: http://www.tacktech....ay.cfm?ttid=287
Make sure, you select tool, which is appropriate for the brand of your hard drive.
Depending on the program, it'll create bootable floppy, or bootable CD.
If downloaded file is of .iso type, use ImgBurn: http://www.imgburn.com/ to burn .iso file to a CD (select "Write image file to disc" option), and make the CD bootable.
NOTE. If your hard drive is made by Toshiba, unfortunately, you're out of luck, because Toshiba doesn't provide any diagnostic tool.
Thanks to Broni for the instructions