Hi Kitten04
I think the message 'Primary Hard Drive Failure' answers your own question, without worrying about the other error messages.
Personally, I would backup all important data, movies, music, etcetera, and invest in another Hard Drive, before it's too late.
The following link explains how you would install a new drive: -
http://www.pcguide.com/proc/physinst/hdd-c.html
If you are unsure how to install it, take it to a repairer and I am sure that they will also install XP for a nominal sum as well.