thanks for the replies guys
I live in Houston, TX. My rig has just been up and running for a little less than a month. I have an air purifier on the left on my desk and my rig on the right
My HD's temperature is ~35C under normal usage(not idle), and there's 2 x 80mm fan from the front of my case blowing right across it, so heat shouldn't be the problem.
I'm currently at my school's library right now, so I can't clearly state that which component is the sound coming from, but it will be the first thing I'll do as soon as I get home.
I started to noticed the noise for only about 2-3 days ago, I thought it was my purifier 'rumbling' somehow under low speed. But this morning when I saw "this sort of topic" scrolling on Tomshardware homepage, so I thought I would take a chance to look further into it, since I don't usually have good luck with electronic components :?
Do you think maybe the PSU has something to do with it also? I've never trusted it since it came with my budget-tighted $50 case. I'm planning to purchase an XClio GreatPower 550W which others have recommended me in my other thread. But again, I'm still under the budget issue.
Anywayyy, I'll keep yall updated with the system.
Thanks again for all of yall's time and support.