First off, for context, please list the specs to your build;
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.
Assuming the motherboard's PCB has labelling next to the slots, are your rams populating slots A2 and B2 on your motherboard? If the same stick of ram run individually takes longer, then the problem could be narrowed down to a faulty/failing stick of ram out of a ram kit. If the same stick works fine in the same slot but is slower in the next slot, then it's possible the (integrated)memory controller is having issues or the motherboard's BIOS is (partially)corrupt.
It bsod when I trying to dowload the wifi drivers and only wifi drivers
Where are you trying to download the driver from?
Might want to see if you can attach the .dmp file for said BSoD. You'll need to host the file on a site akin to DropBox and then pass on a link for us.