Hey, I upgraded my ram to a 8x2gb 1866mhz and whilst upgrading I noticed a loose screw in my case so I shook it out and thought I was good. Pc boots normally BUT when it is loading the motherboard and stuff (the HDD light is not on) it does a click every three seconds until it stops when the hdd is at load, it could be the DVD drive or I don't know, I have set every thing about dram on auto (MSI g70a-g43 mobo) and it still does that sound...