Z170M Pro4S - not start after update to beta 2.23
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=1587
Printed Date: 19 Jul 2025 at 10:57am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Z170M Pro4S - not start after update to beta 2.23
Posted By: Koky999
Subject: Z170M Pro4S - not start after update to beta 2.23
Date Posted: 25 Dec 2015 at 4:40pm
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Hello there. I have a problem. I am building one rig for my friend and I chose this MB. It comes with BIOS 1.00, so I updated it to to last stable version 2.20. During some version there were problem, that it can't be flashed, because of secure check fail. I tried different flash drives and repeated download. Sometimes it successful update after few reboots. Everything works fine, I installed OS (Windows 10) and then I go to flash beta BIOS 2.23 with SkyOC support. I go to Instant Flash and chose the beta version. It successful finished and then asked "Press enter to reboot". I pressed Enter, PC reboots and then black screen and after few seconds first beep error code - 2 shorts (Memory parity error), after another few seconds next error with 5 shorts (Processor error) and last is 9 shorts (ROM checksum error). And then it repeats. I guess MB or BIOS ROM is defective after beta update. Any suggestions? Is there any options for BIOS recovery? Thank you, Merry Christmas and Happy New Year.
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Replies:
Posted By: Xaltar
Date Posted: 25 Dec 2015 at 5:29pm
Merry Christmas  You are getting activity from the board so the flash is not bad. Remove the power from the system then take out the battery and set the clear CMOS jumper in the clear position. After about an hour or so return the clear CMOS jumper to it's default position then replace the battery and power up the system again. Any time you have post issues after a BIOS flash the first step is always to clear CMOS.
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Posted By: Koky999
Date Posted: 25 Dec 2015 at 5:33pm
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I forget to write I tried to clear CMOS. I will try your process. I tried remove battery and set jumper for only 10 minutes, but I will try an hour. Thanks.
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Posted By: Xaltar
Date Posted: 25 Dec 2015 at 5:56pm
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If it comes to it and you can't get the system to post you can purchase a new BIOS chip directly from ASRock for $5.00. You can find the info http://www.asrock.com/support/index.asp?cat=RMA" rel="nofollow - here .
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Posted By: wardog
Date Posted: 25 Dec 2015 at 6:25pm
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2..20 Has an ME update. Did you leave the usb stick while rebooting after it flashed the BIOS? |
Posted By: Koky999
Date Posted: 25 Dec 2015 at 6:31pm
| I plugged it off when I booted to Windows after flashing 2.20, not while rebooting. I think... |
Posted By: Koky999
Date Posted: 26 Dec 2015 at 1:07am
Well I tried to Clear CMOS and pull battery out for few hours and still didn't work. I hope new CMOS memory will help 
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Posted By: Xaltar
Date Posted: 26 Dec 2015 at 1:49am
| A new BIOS chip should sort out your problems. As far as I am aware you can order the chip with the BIOS version of your choice so be sure to order one with the Sky-OC BIOS version preflashed. |
Posted By: Koky999
Date Posted: 26 Dec 2015 at 1:57am
| Yes, that is exactly what I want to try. Thanks for help. I will write when I will receive new chip with my results. |
Posted By: Xaltar
Date Posted: 26 Dec 2015 at 1:57am
Good luck to you 
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Posted By: Koky999
Date Posted: 11 Jan 2016 at 8:36pm
| I finally received new BIOS chip, so I will try in evening if it will start and if yes, I will try to OC of i3-6100 :-) I have 2 new BIOS chips for sure. |
Posted By: Koky999
Date Posted: 12 Jan 2016 at 5:14pm
| It work! But not without problems. When I put new BIOS chip, it says Intel LAN MAC address is missing in CMOS and Flash. So you need ASRock MAC Tool (http://www.asrock.com/support/download/mactool.asp) and write MAC address there from sticker on motherboard. Now it is working :-) |