Jeffoo

They did something wrong with the installation, the wrench part need to be done outside the case. The installation is actualy pretty easy. I suspect perfomance impact from the weird installation.
 
First put the screw and place the ruber on it."Don't forget the backplate."

 
Then assemble all the other parts before the aligment."Don't put the thermal past on the cooler this is not my picture."

Then put TIM on the cpu, align the cooler with the screws already on the motherboard and tight it from the back plate.

Maybe he explained wrong, But the fact is ... if you dont need IGPU xeon are a good way to save some money. Then what he said about cooler and others things was bullshit.
 
e3-1230 v3 score around 10000 (250$)
i7-4790 score around 10000 (290$)

Option1: Try the free version of driver fusion, then launch the usb3 driver installer as administrator.
Option2: System recovery to first boot in windows, then install all drivers and updates before overclocking.
Option3: Formate your PC.
 
There is more options, but I highly recommend doing the third one since it's a new build and it's sad when there already issues.