[Solved] Z370 extreme 4 does not start
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=8157
Printed Date: 05 Aug 2025 at 6:40pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: [Solved] Z370 extreme 4 does not start
Posted By: CDWard
Subject: [Solved] Z370 extreme 4 does not start
Date Posted: 23 Mar 2018 at 4:40am
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Hello everyone, I decided to build a new system and set up everything according to the manuals. Now I plugged in everything and pressed the power button. Nothing happened. I consulted the troubleshooting guide of the PSU and disconnected it for 5 min. As I turned on the PSU again, the lights from the graphics card and the cooling device flashed on for a second before everything seems dead again. I am desperate on how to get everything running. My system CPU: Core i7-8700K LGA1151 MoBo: ASRock Z370 extreme 4 PSU: AeroCool P7-650W Platinum GPU: msi gaming X (GForce GTX 1080 Ti) RAM: Corsair Vengeance LPX (CMK32GX4M4B4000C19R) Thank you in advance. C.D.Ward |
Replies:
Posted By: wardog
Date Posted: 23 Mar 2018 at 4:50am
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" rel="nofollow - And ....... cooling device is? By chance did you forget connecting the 8-pin CPU power in the upper left? |
Posted By: Xaltar
Date Posted: 23 Mar 2018 at 4:57am
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Check your Clear CMOS jumper, if it is set to the "clear" position it will behave exactly as you describe. ------------- 
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Posted By: CDWard
Date Posted: 23 Mar 2018 at 5:15am
Oh, sorry, forgot that one. CoolerMaster Masterliquid ML240L Yes it is. Checked thrice that I used the right cable and plugged it into the right outlet in the PSU.
Checked. It is open. |
wardog wrote:Posted By: Xaltar
Date Posted: 23 Mar 2018 at 5:39am
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If the clear CMOS isn't bridged then I recommend you pull the board from the system and bench run it (on it's product box). There is a high likelihood you have a short between the board and the case. Basically your board's protections are kicking in and preventing power on, we need to alleviate every possible cause for this. If you still get the issue bench testing the system then it's time to pull the CPU and check for bent pins or warping on the CPU. Hopefully it's something as simple as a misplaced standoff on the case. -------------
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Posted By: wardog
Date Posted: 23 Mar 2018 at 6:01am
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What Xaltar said above and double check the case wiring to the MB's system panel header. |
Posted By: CDWard
Date Posted: 24 Mar 2018 at 12:43am
" rel="nofollow - Thank you for your help.
I tried this now. Unfortunately nothing changed. Do you have any more ideas? |
Posted By: Xaltar
Date Posted: 24 Mar 2018 at 1:14am
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Next step is to try another PSU. If the PSU voltages are out of range for some reason that can also trigger the protection circuits. You can also carefully check the board, bottom and top, for any signs of a short. I would first check around the CPU socket to make sure no thermal compound has leaked over the surrounding components. Quite a few thermal compounds are conductive or capacitive so always be on the lookout for spill over. The other common area a short can develop (rough handling, bumping, scraping when installing etc) is the underside of the board. There are numerous solder points that have protruding wires, if these are bent together it can cause shorts, particularly around dense solder areas. At this point I am leaning toward PSU. Double check with your current PSU that you are connecting the 8 pin CPU power to the board not an 8 pin PCIe power connector. I have had this happen myself on occasion, particularly when I am distracted or frustrated while building  Good luck and let us know how you get on. -------------
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Posted By: CDWard
Date Posted: 24 Mar 2018 at 1:44am
I suspected the PSU as well as the motherboard, so I simultaneously got in touch with the support of the PSU manufacturer. Unlike you, I received no response from them yet. So big thanks to you.  I also finally got a second PSU from a mate to test. I only connected the 24 pin ATX plug and turned it on, and all the lights on the mobo went on. So it should be the PSU. Thanks again for your help. |
Posted By: Xaltar
Date Posted: 24 Mar 2018 at 1:53am
Let us know how how it goes with the new PSU  I take it the old PSU did not power the system on with only the 24 pin connected? If not then it is almost certainly the problem. -------------
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