So I recently upgraded to Win 10 on my Seagate Barracuda 160 GB HDD and eventually it caused problems with my system and I was too tired to fix it. Luckily I still have my 6 year-old Dell Optiplex GX620 with a 160 GB Samsung HD161GJ on it which is still intact so I installed Windows 7 Pro SP1 on it and rigged the HDD to my custom built PC. Later this week while dad was using the PC, he started to hear a weird buzzing noise on the system. It was noticeable even when the system is on idle and it gets louder when playing games or using chrome. (games are separately located on my other Seagate Barracuda 500 GB HDD and chrome is on the 160 GB) Is this a sign of my HDD dying? Idk how to tell but it is starting to worry me.