Dell Latitude 5511 audible electrical noise

[Asxetos21]

I have a Dell Latitude 5511 laptop, and lately, a faint but clearly audible electrical (crackling) noise comes from the motherboard, similar to the random clicking coming from a mechanical hdd's heads moving inside it.
The laptop shows no signs of malfunction, and clearly this is electrical not mechanical, so my suspicion goes to a dodgy component in the power rails (a capacitor or a coil?). I fear this could develop into a serious damage.

Any advise on how to narrow it down?
The schematic is available here:
Dell Latitude 5510 5511 - Precision 3551 FDV50 FDV51 LA-J282P Rev1.0 Schematic Diagram https://www.badcaps.net/forum/troubl...2p#post3585122

Thanks...

[Aliencomputres]

pull out hdd,wifi,ram,battery and power up.

[Asxetos21]

Can you explain the point of this? Magic spell?