|Also... depending on how the drive died this may be useful to know about - and possibly give it a go?|
If you remove the (olde) hard drive, wrap it in some paper towel, or several large kleenex tissues; place in a small plastic bag (sandwich bag or similar perhaps); close it so all (well most) of the air has been expelled. Place it in the "fridge" - NOT the freezer. Leave there about an hour or so - perhaps as long as two. Remove from fridge and lay somewhere flat and safe; open the bag and allow air to enter obviously. Remove from plastic bag and leave drive (still in the paper towel or whatever) to sit for about 15mins - in a cool to warm location (not overly warm/hot). Then remove the paper towel "wrapping", and if there is any moisture present (usually there isn't) gently wipe it off.
You can now re-install/reconnect the (still) cool/cold drive to your computer... It may now boot up! If it does... you have probably a very limited time only before it will likely fail again... So copy all your personal files etc. to optical media; doing this (first) of course means you haven't lost anything you'd like to keep?
If you have the new drive to hand, you may be able to clone the old drive to the new as well. Most new drives arrive with software that allows you to do this; thus allowing you to be up and running very soon afterwards.
If you aren't too concerned/worried about saving data/files etc. first, then try the cloning process first?
This routine of chilling down a drive, and so on is an olde trick. Found it here a long time ago (also sen it elsewhere since); all credit to whomsoever posted it... It has served me well a couple of times and allowed full data recovery more than once; and at least once would have allowed a cloning process if I'd opted for it.
Incidentally you may be able to repeat this cooling process etc. a couple of times before it fails to work; no way of knowing...
Did the drive make any noises before it died; often they do? The chilling/cooling routine above is often very successful with those drives.
And "finally" (as per the very late Walter Cronkite oft remarked...) whereabouts are you located?