intel i5-9400f

I just installed the ASRock B360 PRO4 LGA1151 motherboard and noticed it's only acknowledging 4 cores out of 6. I have the i5-9400f for my cpu. I've flashed the bios to the newest version available with no luck. I was wondering if anyone knows how to fix this or what the cause is in case I need...

Hello! I want to build this PC. I bought PC House and VGA but the rest no. CPU: i5-9400F VGA: Gigabyte GeForce RTX™ 2060 OC, 6GB, 192-bit Mothetboard: MSI B360-A PRO Socket 1151 v2 RAM: Corsair Vengeance LPX 16GB 2x8GB DDR4 2666MHz CL16 FPU: Thermaltake Smart RGB 600W 80 PLUS PC House: ATX...

I recently bought asus B360-f rog strix motherboard in an online marketplace. And i bought intel i5-9400f separately. I dont know the current BIOS version in my mobo. ASUS website says it will be able to support intel gen 9 cpu if BIOS version at least 0802. My question is, what will happen...