[SOLVED] Computer not starting normally with cpu fan making innatural spins

[AJNameS]

Hello, I'll try to be kinda' short and clear, while being detailed at the same time
So, the problem is the following:
I recently built a new system, but when I connect it and turn it on, it doesn't start normally and there is no any display. The cpu cooler makes spins and stops every few seconds, infinitely this way. Ofc, at the same time, the PSU is working and making its own spin 'loops', too.

The targets here are:

• The motherboard, Asrock B85-HDS. It is updated to accept Haswell-refresh CPUs, like the current.
• The CPU, i5-4690. The previous CPU having been used is i5-4590, with 16 gb ram. The previous user recommended to try a low-power cpu like a celeron, but he has never encountered such a thing. No overclocks of anything at all...I can't start things even just at stock.
• As for the ram, well... whatever I do with it - 1 stick here, 1 there, only one, even if no ram stick is in, no difference. And there is no post, no beeps or such. They are, tho, two compatible with each other 1600 MHz equal timingс Samsung 4 gb and hynix 8 gb. Not to mention another guy used them on another system a few days ago, and it 's been working normally.

I don't think there is anything wrong with the other components, bearing in mind I am simply using them to write here from another configuration.
So what I think is, that there is most likely some kind of an issue with the mobo or the CPU. It's kinda' clear for me, that things are leading to a local PC technician or experimenting with cheap parts, but I wondered if someone can say something professional.

Here about what I have done and for the other components:
The CMOS batteries (both the ones I tried) are working normally. Bios was reset with both the batteries and the jumper, even with both the jumper-and-batt out.
The cpu fan is a stock one, but is a normally working one. With a red akasa written on it, it is a 4-pin(accepting) regular and finely workin'
The GPU is gtx 1050. It doesn't matter if it is connected or not. The VGA & HDMI-outputs from the mobo didn't help me reach any picture either.
PSU is 500W 70%-utility MakkiATX. Not a hi-quality one, but it is working just fine, never havin making me any problem or liability.
HDD 7,2 k rpm toshiba. A very good 100% health 100 %-performance one.
The power/reset/led cable - a perfectly working one, too. I turned on the mobo via a screwdriver on the power switch, so about this cable nothing can be said. Any other cables -sata, hdmi, vga, are perfectly working, too.
This is not a thermal issue for me. I removed the cpu fan. Nothing changed, and at the same time the CPU itself was cold when I touched it even after 30-40 spin loops.
The system was literally disassembled to cpu, PSU and a mobo. Even ram was removed at the end. Even thermal paste of something like a northo-southern bridge was changed with mx-4. No difference at all.
DVD-writer, which...is perfect.
Damn... I even isolated mobo from any metal, even putting it to sit on the edges on plastic mattery...

 

[popatim]

Make sure the CPU fan works. Many motherbds wont boot up unless they detect a working cpu fan.

 

[AJNameS]

Like I tried to say, everything else was guaranteed to be working just fine, xcept for the mobo, cpu & ram.
Well, what I found out today, was that the ram and the cpu are also just fine, and that the motherboard is damaged, and I mean the socket. Not only some pins distorted, but also 1-2 or more pins broken (ye, this means dead). A pretty bad seller from my country, what to say...

I think I will be able to put a new socket in. I'd need a heatgun, a new cheap socket and...well, I am half-prepared for such things. I just don't want to throw out the motherboard.