Internal Hard Drive Making Beeping Noise, Laptop Won't Start Up

I am using a Dell Inspiron 14 laptop. A few days ago, I noticed that my laptop has become incredibly slow (the system will hang sometimes, and continue as per normal after a while), and this coincided with my laptop beginning to make this weird, sharp beeping sound. At first I did not pay much attention to it, but later this was joined by several BSODs, and my laptop became even slower (games that usually did not lag was now hanging halfway through, and continuing as per normal after a lengthy period of 1 minute or so). I tried to find the origin of the noise, and I think it came from my Internal hard drive sector, and thus decided to open the sector up (in hindsight I probably should not have). After I replaced it, without doing much (just doing the usual IT-amateur stuff, wiping it and blowing it a few times), my situation has now worsened to the point that startup takes a much longer time, and finally now it hangs at the "Starting Windows" screen, but without the Windows 7 logo showing, and my screen later turns black.