Intel Motherboards - Z170 Extreme4+, Error C1 after Bios Update

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Z170 Extreme4+, Error C1 after Bios Update

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=9164
Printed Date: 08 Aug 2025 at 6:58am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Z170 Extreme4+, Error C1 after Bios Update

Posted By: centaur555
Subject: Z170 Extreme4+, Error C1 after Bios Update
Date Posted: 17 Jul 2018 at 5:06pm

" rel="nofollow - I have been running my Z170 Extreme4+ with Bios 7.00 for almost two years without problems.

Ram Type 4x Kingston HyperX Fury 8GByte HX426C15BK2/16

Because of Spectre vulnerability I have just flashed the new 7.40 Bios. Now my PC will not boot anymore. I get error code C1 right away. Clearing CMOS does not help. So I have switched BIOS from A to B. Now I have Bios 2.70 which is the initial BIOS the mainboard was delivered with. 2.70 boots fine.

I would like to get back to Bios 7.00. How to do it?