I wouldn't be worried about the task manager, the fact that you are getting bad sectors, and possibly health status issues with your hard drive(s) is the alarming thing.
Optimal and least painful option: backup your important shit, buy a new SSD and install the OS of your choosing on it. That way you'll have a clean install without any corruption, and ditching the shitty hard drive in favor of a solid state drive does wonders for your PC my man. I've had my SSD for over 6 years now, it hasn't had any runtime issues, and it's still just as fast as when I got it, because it doesn't deteriorate nearly as much.
You're gonna need to get a new drive sooner or later anyway, bad sectors indicate that something really isn't working right on a hardware level with your hard drive; it can literally fail any second. Now some people have had bad sectors for years and it's been fine and dandy, but it's not a risk worth taking. Many lives have been lost yo.
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Also, CrystalDiskInfo usually gives reliable results when it comes to HDD and SSD issues. That's what you want to use if you didn't already.