This way, there is nothing stopping CHKDSK other than hardware issues.
But your first step is to confirm the backups of what you can't lose are done.
Before I get into running CHKDSK from DVD or USB I'll share I use the CHKDSK off a W10 USB install stick and think we should read your Web Speccy report from https://www.piriform.com/docs/speccy/using-speccy/publishing-a-speccy-profile-to-the-web which will give me your HDD health report and maybe more.
https://neosmart.net/wiki/chkdsk/ covers how to run CHKDSK from almost any of the Windows boot CD/DVD and USB. ALWAYS use the same if not higher version of Windows for the boot disc/USB.
I recently tried to scan my C: drive for errors on my PC with Windows 7 Pro. It asked me to reboot and the scan would run upon the new boot. However instead, I got a message saying there was an unspecified error caused by a recent program I had installed. It suggested I restore my system to a time before I had loaded that program, except I didn't know which program was causing the problem. In the meantime, I discovered that I also could not access the safe mode on startup using the F8 key. Next, I investigated further and found the last new program I had installed. It was EaseUS Todo Backup Free. Problem was it had been installed 2 or 3 months ago and system restore would not restore that far back. So I just uninstalled the EaseUs program. Doing that made my F8 key work again, but it didn't make chkdsk work. So now I'm thinking maybe EaseUs made some changes to the registry upon install that weren't changed back upon the uninstall. Now I don't know what else to try to get the chkdsk to work! Help!

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