Computer died and upon replacing psu, motherboard and cpu, still doesn’t get to post

Aug 21, 2018
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So two nights ago I had an issue where the safety switch blew, I turned everything off in my room, turned the safety switch back on and turned everything in my room on, this is when I noticed my computer was not booting, my peripherals rgb lights were blinking every second or so and so was the (start) button on my Maximus VIII ranger motherboard. I replaced the psu, with a Corsair HX850i, same issue, I then followed the steps on this forum, and breadboarded the motherboard I noticed that the light stopped flashing and the motherboard actually started up for a while, after unplugging the cpu EATX12V plug, still with the 00 q-code. So I figured maybe the motherboard was the issue, replaced that with a Maximus X Hero, same issue, without flashing peripherals (or start button, but still turning off after clicking the start button with a small click from my psu) at my wits end I took back the cpu I bought 2 months ago, and got a replacement (i7 7700) and took it home only to have the very same error I’ve now unplugged everything, only the psu and cpu are plugged in (not even ram) and nothing, no beeping, no pausing, just turning off after 1 second. Anyone have any ideas? I’m very ready to just give up and pick up another hobby because now nothing is original (not even the wall socket)
 
First thing: your motherboard needs to have at least BIOS version 3007 or it won´t post with a 7th gen CPU. You are lucky that your board supports USB flashback. Use it to update the BIOS to the latest version:
https://www.asus.com/us/Motherboards/MAXIMUS-VIII-RANGER/HelpDesk_BIOS/
HOW TO:
https://www.asus.com/us/support/FAQ/1036008

If it won´t work after the 1st try, try a second flash (https://www.asus.com/us/support/FAQ/1031846)


Without RAM it won´t post. Maybe RAM is faulty.

reset the motherboard by jumper

8pin EATX12V power is plugged in?

Do you use the original cables which were delivered with your new power supply?

Is your motherboard on a non conducting surface? Don´t use packaging, foam, or foils of the packaging.

CPU cooler is installed?

Any CPU socket pins bent on the motherboard?


 
Aug 21, 2018
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Hi, thanks for the response, I’ve since figured out that apparently 7th gen cpus aren’t supported with maximus X, I’m going to be taking the cpu back today and swapping it for a 8th gen (and paying the difference) I’ll come back to let you know if that was the issue, thanks again.
 
Aug 21, 2018
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Yup, guess I just got really unlucky, not having a compatible cpu is the same error as having a dead MB, it just turns off after a second. All good now thanks anyway!
 

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