Usually clicking means a failing magnetic (mechanical) hard drive… but it looks like your laptop is fairly new and it comes standard with a solid state drive (SSD) that wouldn’t make any noise. Does the clicking only happen when it's booting up? If so, it could be from the fan turning on and off rapidly until the power management firmware in the BIOS fully loads and takes control of the fan. This wouldn't be terribly uncommon (for the fan to pulse on and off at boot time, but it shouldn't have an audible click.) I don't know if that's normal for your laptop… I'd say that it is not. Clicking sounds could indicate wear on the fan's ball bearings… which could be indicative of premature failure. But if you only hear it during early boot-up stage, it's probably something else. If you have warranty, I'd take it in; otherwise I'd say it's probably fine.

I know I'm late to answer here, but I figured I'd post (if anything for other people who might read this later.) Yes, you technically could swap CPUs in phones (provided that the CPU's have the same BGA layout and basic power/voltage specifications.) You would also have to reflash the firmware on the eMMC storage chip to get a different CPU to boot assuming the motherboard is capable. But, the realistic answer is no, don't even try this or you will ruin both devices. Cell phone CPUs are soldered on to the motherboard with a ball-grid array (BGA) which means the CPU has hundreds of tiny solder balls connecting it to the motherboard. You could change the CPU by heating up the solder balls under the CPU (a heat gun works, but a BGA soldering station is needed to be able to control the heat.) You must get the solder balls under the CPU hot enough to melt so you can remove the CPU without ripping out the tiny metal traces (wires inside the PCB board.) If you rip out the traces because the solder balls weren't...