I cannot disable CSM, it enables automatically
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Forum Name: AMD Motherboards
Forum Description: ASRock AMD Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=4390
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Topic: I cannot disable CSM, it enables automatically
Posted By: smarcelli
Subject: I cannot disable CSM, it enables automatically
Date Posted: 10 Feb 2017 at 3:45pm
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Hi everyone. I'm trying to install Windows 8 PRO (regular version from DVD) on my new ASRock FM2A68M-HD+. Mission impossible because after saving and exit the boot it enables automatically. How can solve this annoying issue? The combo motherboard and CPU is "ASRock FM2A68M-HD+". The disk on which I want to install win 8 is a Samsung SSD used that worked very well. Thank you for your help. ------------- Regards, smarcelli |
Replies:
Posted By: Xaltar
Date Posted: 10 Feb 2017 at 4:42pm
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" rel="nofollow - I am not sure what the problem is based on your post. Boot options not saving in the UEFI? Failing to boot from the SSD? I am sorry but I can only help if I understand the problem. Please also post your full system specs so we know what you are working with, include brand a models. ------------- 
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Posted By: parsec
Date Posted: 11 Feb 2017 at 12:50am
You're saying the CSM option, when set to Disabled, and you Save and Exit the UEFI, resets to Enabled by itself, correct? Also the PC starts fine into the UEFI/BIOS when you do this, but later you find CSM is set back to Enabled, right? If you have Windows installed with CSM Enabled, and then try to set it to Disabled, that will never work. You must install Windows with CSM disabled during the installation. Like Xaltar said, I don't know if I understand exactly what your situation is. What UEFI/BIOS version do you have in your board? So we know, why do you want to disable CSM? Please explain why you want to do that? Just asking why. I know of several reasons, just wondering why you want to do it. Some information about the CSM option: CSM does not need to be disabled to install Win 8, or any version of Windows. When you disable CSM, the video source in the PC must be compatible with a UEFI protocol called GOP. If the video source is not GOP compatible, you won't get anything on the monitor. What are you using for the video source in that PC? The built in video, or a video card? As a safety feature, the UEFI/BIOS will reset CSM to Enabled if it detects a compatibility problem with the PC's hardware not being all UEFI compatible. I assume that is what is happening to you. You can try the following to use some of the UEFI features without setting CSM to Disabled. Click the CSM option to open its sub-options. Find the Launch Storage OpROM Policy option, and set it to UEFI only. Part of the problem may be using a disk/optical drive to install Windows 8 in UEFI booting mode (CSM disabled). If the boot order, when you try to install Win 8, the entry for the optical drive must look like this: "UEFI" <optical drive name>, or you cannot install in UEFI mode. Also, Windows 8 MUST be 64 bit, or you cannot disable CSM. What is the SATA mode set to for the Samsung SSD? It must be AHCI mode. ------------- http://valid.x86.fr/48rujh" rel="nofollow"> 
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smarcelli wrote: