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#11
You should backup your stuff now. But hold off on the install. Please post a screenshot of the full disk management page showing both the top and bottom portion. (right click computer, select manage, provide admin approval and select disk management in the left column) Once you get there, type snipping tool in the search box or use the print screen button and open paint and paste it there. save it to somewhere you can get to easily.
also, your specs say you have a Western Digital drive. Download their diagnostic utility, data Lifeguard and run it. The fact that it will boot after running check disk, would make you think about the hard drive.