[Health Error]

I got the message Health Error with the red bar on Start/Stop Count 100,902 and yellow bars on:

Reallocated Sectors Count 1,414

Current Pending Sector Count 40,531

Uncorrectable Sector Count 40,531

 

Can anyone tell me what this means?  I have used Malwarebytes, scanned with Avira Antivirus (Free versions), Piriform CCleaner, and Windows Malware Removal tool.  Any suggestions would be helpful.