Your question is a bit confusing. You say you have a dead hard drive, but the laptop is fine.
Is this hard drive INSIDE the laptop, or is it an external hard drive in a separate box, or is the hard drive somewhere else (in another computer)?
If it is INSIDE the laptop, then is this the hard drive with Windows and all your programs on it ?
If so, if you buy a new hard drive how are you going to get Windows and all your applications on it?
To answer your question fully we need more detailed information.
more..............