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07-07-2016

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P510 - Cannot enable CSM, even after Secure Boot is disabled.

2016-08-03, 14:39 PM

I'm working on installing our Windows 7 Enterprise image on the new P510 workstations we've received, but I am unable to enable CSM.  Before I disable Secure Boot I get the expected message on the CSM configuration screen about the active UEFI Secure Boot Mode, but after I disable Secure Boot the CSM Configuration page is simply blank in the BIOS. I've tried both Setup Mode and User Mode (Factory Default Secure boot keys) for the Secure Boot Status, with the same results.  This also happens whether the Bios is in Text or Graphic Mode - the CSM configuration screen is just blank.

I've downgraded the UEFI firmware/BIOS, I've installed the latest available BIOS (6/27/2016 - which is what came on the machine anyway), and the problem is the same on two identical machines, model 30B4CTO1WW.  

 

Am I missing something ridiculously simple, or is this a bug?  Thanks..

 

 

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14 Posts

06-21-2016

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Re: P510 - Cannot enable CSM, even after Secure Boot is disabled.

2016-08-03, 15:31 PM

CSM will not always be shown as a CSM on/off option; however, the Compatibility Support Module directly relates to Legacy support. So, I would start by resetting my BIOS to defaults and then reviewing the following options:

Secure Boot
Sets the Windows secure boot to prevent the unauthorized accessing. Press
<Enter> to enter the sub-menu. This sub-menu will appear when “Windows 8
Feature” is enabled.

Secure Boot Control [Disabled]
Enables or disables secure boot.
[Enabled] Enables the secure boot function and allow you to set the secure
boot settings.
[Disabled] Disables this function.

Secure Boot Mode [Standard]
Selects the secure boot mode. This item is to select how the secure boot keys
be loaded. This item appears when "Secure Boot" is enabled.
[Standard] The system will automatically load the secure keys from BIOS.
[Custom] Allows user to configure the secure boot settings and manually
load the secure keys.

Image Execution Policy
Sets the policy when the system image execution policy on Security Violation.
Press <Enter> to enter the sub-menu. This sub-menu will appear when “Secure
Boot Mode” sets to [Custom].

Key Management
Manages the secure boot keys. Press <Enter> to enter the sub-menu. This sub-
menu will appear when “Secure Boot Mode” sets to [Custom].

LAN Option ROM [Disabled]
Enables or disables the legacy network Boot Option ROM for detailed settings.
This item will appear when "Onboard LAN Controller" is enabled.
[Enabled] Enables the onboard LAN Boot ROM.
[Disabled] Disables the onboard LAN Boot ROM.

Legacy USB Support [Enabled]
Sets Legacy USB function support.
[Auto] The system will automatically detect if any USB device is connected
and enables or disables the legacy USB support.
[Enabled] Enable the USB support for legacy operating systems that do not
support USB.
[Disabled] The USB devices are available only for UEFI applications.

Boot Mode Select [LEGACY+UEFI]
Sets the system boot mode from legacy or UEFI architecture depending on OS
installation requirement.
[UEFI] Enables UEFI BIOS boot mode support only.
[LEGACY+UEFI] Enables both Legacy BIOS boot mode and UEFI BIOS boot
mode.

 

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4641 Posts

02-22-2010

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Re: P510 - Cannot enable CSM, even after Secure Boot is disabled.

2016-08-03, 16:03 PM

I believe the reason you can't do anything with the CSM is because your system has OS Optimized Defaults set to enabled.  If your system shipped with win10 or win8.1, this setting gets set to enabled by default, and puts your system in a pure legacy mode.  We use that as a "catch all" setting to make all necessary BIOS setting adjustments to be able to support WHQL logo requirements on win8.1/10.

 

If you go in to F1 setup, and tab over to the exit screen, you should see an option for "OS Optimized Defaults" which you can change to disabled.  Once you save, exit, reboot, and come back into BIOS setup, you should now see your CSM settings available.




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3 Posts

07-07-2016

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Re: P510 - Cannot enable CSM, even after Secure Boot is disabled.

2016-08-03, 16:09 PM

Ah, so it WAS something ridiculously simple.  Thank you!

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1 Posts

09-13-2017

US

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Re: P510 - Cannot enable CSM, even after Secure Boot is disabled.

2017-09-13, 14:16 PM

thanks a lot - solution worked for me!

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1 Posts

05-23-2020

PK

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  • Message 6 of 6

Re:P510 - Cannot enable CSM, even after Secure Boot is disabled.

2020-05-23, 19:05 PM
I can't see OS Optimized Defaults on exit on bios. I can't see CSM in bios. I cant resolve the 1962 error
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