LOL
that sounds familiar!
Did you....
open up your computer recently
move it slightly
clean it out
tap it
or something like that
Or try this:
open the drive
insert a CD
does it make a humming noise?
If it does, i got a solution!
Solution:
Open up the side panel on the computer
take out the bus, and all the power suppplies and other cords, and put
them back in their proper locations.
MAKE SURE THAT THEY FIT !!!!TIGHT!!!!
put the side back on the computer
and enjoy a fixed drive!