Maximus iv extreme -z not booting

[Blessed_again]

Computer will not boot or go past ROG screen. The boot code led shows 64 . I have a maximus IV Extreme-z, bios-3603, 3770k CPU, 16 gb-4x4 G-skill rampage ddr3-1600. 1-120gb C4-ssd, 1-180gb intel ssd, Corsair 1200 PS, 2-2tb HD, 1-1tb HD. Custom H20-ek supreme-320 radiator., cosair 900D case. System has been running ok for 1 1/2 years with no problems. I have overclocked to 4.7 but set back to stock. Any help or suggestions would be appreciated.

[Nate152]

Hello Blessed again, here is what I would try. I would disconnect all the drives except the one you boot with. Remove all but 1 stick of RAM then see if it will boot. If you get it to boot, shut it down and add 1 more stick of ram and boot again. if it boots shut it down and add a third stick. continue until all your ram is installed then start with your drives doing the same thing one at a time. Doing this will find the culprit. I hope this works for you.

G.Skill Rampage RAM? Do you mean Ripjaws?

[Blessed_again]

Yes, I meant Ripjaws. & Thanks for your help. I did find my problem by following your advise. Sorry I didn't get back sooner. My problem was with a CD printer/burner that had locked up?? I unplugged the power & USB, plus all the other stuff you suggested and It now works. I'm now struggling with offset overclocking but will start another Thread to deal with that. Thanks so much & be blessed

[Nate152]

Glad that worked for you and thanks for the blessing. Please do start a thread for using offset, there are plenty of knowledgeable people here that will be glad to help you.

[HiVizMan]

Well done Nate, OP I hope you have repped Nate?