Sir, Hard Disk Sentinel (not "Sentinal"
Generally 4.20 version is very-very old, released years before Win10, so I'd recommend to use the latest version instead.
Basically, as displayed in the text description area there are lots of errors reported for this hard disk. I can recommend what the software suggests:
> Replace hard disk immediately.
> It is recommended to backup immediately to prevent data loss.
The number of errors is too high - and these cannot be repaired (as the drive may have physical damages). The hard disk may fail completely any time. If you do not see problems, damaged/corrupted/unreadable files - then you're so lucky - most hard disk drives with so low health produces lots of problems.
In this situation, you may ask for warranty replacement (if the hard disk still has warranty) because the hard disk is considered "bad". For a such hard disk, new operating system installations may not be possible at all and there is good chance that the computer even displays a warning notification
before starting the operating system, indicating that hard disk drive failure may occur soon.
As you can see, chkdsk is not really useful in this case.
Even if this may sounds surprising, chkdsk does not check/verify/repair the hard disk itself, but verifies (and repairs) the logical drive, the partition itself.
The problems found and "fixed" by chkdsk are in most cases different than the actual hard disk problems: chkdsk may find, report and "fix" problems on a perfect hard disk - and may not find anything on an almost failing hard disk.
( http://www.hdsentinel.com/hard_disk_case_weak_sectors.php page shows a such situation, illustrates how chkdsk can't really "fix" bad sectors).
If you'd run Disk menu -> Surface test -> Read test in Hard Disk Sentinel, you may likely see many problems.
You may attempt to run Disk menu -> Surface test -> Disk Repair (in latest versions) as it is designed to improve the hard disk and usability - but only for better hard disks (with less problems). I mean I'd not expect too much from a hard disk with 0 % health...