Incompatibility or closure?

Question

MSI

Greetings!
Motherboard (Motherboard): MSI MAG Z390 TOMAHAWK
BIOS version (BIOS): E7B18IMS.150
Video card (Video Card): Palit pci-e pa-gtx1050ti dual 4g nv gtx1050ti 4096mb 128b gddr5 1290/7000 dvix1/hdmix1/dp
Power supply ( PSU): BEQUIET System Power 9 600W ATX BN247
Processor (CPU): Intel® Core™ i7-8700K Processor
Random Access Memory (RAM): Kingston 32gb 2666mhz ddr4 cl16 dimm (kit of 4) 1rx8 Hyperx fury black
Storage (SSD&HDD): Samsung 970 EVO Plus SSD 500GB, V-NAND 3-bit MLC, Phoenix, M.2 (2280) PCIe Gen 3.0 x4, NVMe 1.3, R3500/W3200, 550K/480K
IOPs Enermax ELC-LF240-RGB
Overclocking: No
Operating system: did not install
________________________________________
Problem in the assembly process!
I can enter the BIOS only if there is 1 memory stick in the second DIMM A2 slot! No other configurations work and run the BIOS! Flashing on the motherboard led cpu and led dram alternately!
When there are all 4 memory bars - also blink and stupor!
What to do? Change memory? Or is there still some way out? Help!!!
On the MSI website - HX426C16FB2K4/32 this memory is compatible with the motherboard!
Processor too.
Save!