Do I need to replace my hard drive?

I'm wondering if I need to replace my hard drive, or if there is some sort of fix (though I kind of doubt there is).

I'm having a few issues right now--the most annoying one is that my computer won't wake up after being put to sleep.
Also about every other time I turn it on it does a file check saying that one of my disks needs to be checked for consistency or something.
The third issue is that when I turn it back on a message pops up about a corrupt file, the file in question has to do...

Do I need to replace my hard drive?