Envy Phoenix desktop Freezes and Event ID 7

Question

I am on an Envy Phoenix 800-060, running Windows 8.1, fully updated. Freezes will occur at any time, and the only way to get past them is to do a hard reboot. Occasionally, I can wait 10-15 minutes and the system will come back to the living slowly, but not often.
After checking the Event Viewer, I noticed there were around 700 drive errors (Event ID 7) in the past 24 hours. The only drive plugged anywhere into the computer was the main harddrive (1 TB) and the recovery HD (20-ish GB, not sure as my desktop is currently catatonic). Is it safe to assume the main HD is dying? I would be okay with just buying a new one and a copy of Windows 8.1. I just want to be sure it would fix the issue.
Extra info: I have done everything from disabling the dynamic tick, to System File Check(SFC), and Deployment Image Servicing and Management tool. None of them affected the death-freeze.
                                 The SFC was unable to fix a file(s)
                                  DISM seemed to fix what SFC failed to fix
EDIT: I posted this when an error check on the main HD (supposedly) had 12 days left to finish. It finished, but with no errors detected.
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Answer 1

The guide that I reviewed for your computer mentioned SMART.  However, it appears there is a difference.  It appears that the hard drive has failed.  Therefore, I don't believe that the Recovery will work.  You can give it a try, however.
When you replace the hard drive, you should assure that the new drive is the same size or larger than the current drive.  Here is a guide that you can use after replacing the drive.  It is for Win 7, but it should be close to the same as Win 8.  It will give you the main idea of how to proceed.
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