CHKDSK Checking when booting

Well...I have a western internal harddrive for storing all my music, movies, files, pictures...It has been more than three years old. But it is still working great though my stuff stored in that harddrive is kind of messy. However, recently I just keep getting errors from it, which I have to reformat it and delete all my files in there(movies, music, pictures)...After formatting, it works fine again but this only works for like one or two times after boot, but usually after the second boot, I always get the CHKDSK message to check for that harddrive whenever I boot up my computer...And then I won't be able to access MY COMPUTER(the computer icon), if I access MY COMPUTER, it just freezes unless I do the formatting again.

My question is if it is time the harddrive needed replacement? Or it is the limit of its lifetime? if not, could anybody show me to how fix it?