What Components Make These Sounds?

Solution
The humming rising in pitch and the light clicks are your HDD. If it really bugs you, since you have a SSD you can go into Windows' advanced power settings and set the HDD to spin down after x minutes of inactivity.

BTW, your PSU has a fan in it too. (Don't disable it though.)
The humming rising in pitch and the light clicks are your HDD. If it really bugs you, since you have a SSD you can go into Windows' advanced power settings and set the HDD to spin down after x minutes of inactivity.

BTW, your PSU has a fan in it too. (Don't disable it though.)
 
Solution