HP gear is usually reasonably well built, if not exactly the kind of system that sets the world on fire ('scuse the pun). Most overheating problems come from someone using their laptop on a duvet or in a dusty environment where the fans and heatsinks can't cope. HD overheating is a very rare problem so either yer really unlucky or you need to stop using it in bed!
HDs don't get that hot in ordinary use, certainly not compared to the GPU in a laptop or the CPU. If yours is overheating it's warranty time and, more importantly, time to back-up whatever you have on it.
Hard disk cooling products are, in my opinion, an utter waste of money. If you need them you have a faulty drive which will manifest itself in other problems, or you have a shockingly bad case or poorly designed laptop. I wouldn't buy HP gear myself, but they generally don't push out badly designed systems with known problems. They just sell mildly over-priced and under-specced gear with a cast-iron warranty - exactly what most people want.
High-end quality gaming systems they're not, but they do the job.