Q4. How can I know if my hard drive is okay?

There are signs that you will know if your hard drive is okay:

First, the computer is not always keep on restarting. A hard drive is in good condition when it only produce the read/write sound when information is either written are being read from the  hard drive.You can also know if it is okay by simply using it when you notice that there is no error or virus detected then your hard drive is okay.

There are no logical failures, media failures, head failures and mechanical failures. Just always check your computer hard drive to keep your hard drive running okay.