If I defragment my Hard Disk drive could it help with the speed of my computer?

yup you should defragment it as it is good for hard drives as this helps the pc to write and read the data. and all this also helps the cpu to process more data .

I like to think of a disk defragment as organizing your files in your file cabinet. Doing so will allow you to find your files faster. It is the same idea with the computer. In simple, yes it will make your computer run faster in some ways. For a four year old computer it might not make a noticeable difference but you definitely should do it anyway for your computer's health.

Yes, for sure... Its kinda like, cleaning up your room so you can find things faster... if you defrag your hard drive the computer will find the files easier and it will be faster...

A Columnist in http://www.brantfordexpositor.ca/ , in Saturdays paper, in the Syd Bolton, Logged on column, covered just that subject

You should defrag once a month. Yes the speed will be better.