Swapped CPU, now system won't post

[AlexHaff]

Hi everyone, I was hoping someone could help me as I've got an issue that's driving me wild!

I've recently upgraded my system with a new case, motherboard, PSU and GPUs, and I'm planning on turning everything I didn't get from my old system into a PC for my girlfriend and I can use in our living room for game streaming.

The specs are:

• 
  CPU - Intel Pentium G3258 Anniversary
  Motherboard - Asus ROG Maximus VI Gene
  GPU - Sapphire AMD R9-280 Dual-X
  RAM - 8gb Corsair Vengeance LP DDR3
  PSU - Corsair CX600
  Storage - 1tb WD Black 7200rpm
  Case - Corsair Obsidian 350D

The only thing different for the system now, aside from storage, is it previously has a i5-4670k, which is now in my main system.

However, since I installed the G3258, the system will not post, and the motherboard's error display reads '00'.

Please help!
Alex

 

[Someone Somewhere]

You likely need to upgrade the BIOS on the motherboard - it will date back to before the CPU was released.

I think those boards have the ability to flash the BIOS even without the right CPU, correct?

 

[Zerk2012]

Your board needs BIOS version 1504 or higher.
https://www.asus.com/Motherboards/MAXIMUS_VI_GENE/HelpDesk_CPU/
You could try to simply reset CMOS first.

 

[AlexHaff]

I updated the BIOS and everything's working!

Thank you so much