Question MOBO WORKS WITH ONE CPU BUT NOT OTHER

[rangafromtonga]

I recently built a PC for my friend with an i5 9600k and an Asus ROG Strix H370-F Gaming motherboard (without knowing that i would need to update my bios for it to suit a 9th gen cpu). I then bought a Gigabyte GA-Z270MX-Gaming 5 motherboard with an i5 7400, so i could use the 7400 to get into the h370-f's bios and update it for it to suit my 9th gen cpu. The 7400 inside the h370, shuts it down immediately after turning it on; can't even boot. I assumed the cpu was faulty so tested it in the motherboard that i bought with the cpu and it worked just fine.

Should I just send the H370-F back because it is still under warranty or is there something else that I can do?

 

[Phillip Corcoran]

The Asus ROG Strix H370-F Gaming doesn't support the i5-7400:

ROG STRIX H370-F GAMING | Motherboards | ROG Global

Best Intel LGA 1151 H370 ATX gaming motherboard with advanced cooling, Aura Sync, SupremeFX, dual M.2, Intel LAN, Wi-Fi and USB 3.1 for 8th Gen Coffee Lake.

www.asus.com

It works on the Gigabyte GA-Z270MX-Gaming 5 board because it's supported.

No mystery to it, and nothing wrong with that Asus motherboard.