Yes my HD was (is dying) and even on youtube the videos would lag T_T
you can always run a diagnostic on your hd...
However... i don't know how much about computers or if you'd want to do that yourself.
if you're in the 514 area I could take a look at it before my hellish school schedule starts.
I am the stone that the builder refused Amicule, deliciae, num is sum qui mentiar tibi?