Windows 10: Can't enable Ultrafast Boot in the BIOS, can't disable CSM in Boot

Discus and support Can't enable Ultrafast Boot in the BIOS, can't disable CSM in Boot in Windows 10 Installation and Upgrade to solve the problem; I have just finished installing everything on my new system and realized that I can't enable Ultrafast Boot in the BIOS. Every time I enable it, it... Discussion in 'Windows 10 Installation and Upgrade' started by Genova, May 4, 2021 at 5:47 AM.

  1. Genova Win User

    Can't enable Ultrafast Boot in the BIOS, can't disable CSM in Boot


    I have just finished installing everything on my new system and realized that I can't enable Ultrafast Boot in the BIOS. Every time I enable it, it reverts to disabled. I'm using an NVM.e m.2 SSD (SK Hynix P31 Gold 1TB). Everything was set to UEFI during the installation process, but I did not have CSM disabled before I installed the operating system, which is Windows 10 Pro 64-bit. I think perhaps part of the problem was that I used a very old graphics card during the installation (nVidia 9800GT), as my processor has no integrated graphics, and I had not yet moved my normal GPU into my new system. But I was able to navigate the UEFI BIOS during the initial BIOS check, so that's probably not it. Now I have my more recent GPU attached and trying to enable UltraFast Boot in the ASRock Z590 Steel Legend 6E WiFi motherboard, but it's not working. Trying to disable CSM doesn't work--it keeps auto-reverting to enabled. Although CSM is effectively disabled, since "Launch Storage OpROM Policy" setting is UEFI Only. Trying to enable Ultrafast Boot doesn't work: it keeps auto-reverting to disabled. For reference, I'm using that m.2 SSD as my main drive and 1 WD Black 6TB WD6001FZWX storage HDD. I did not have the HDD connected when I did the Windows install--only the SSD. Isn't there Anything I can do about this without doing a complete reinstall? I've now installed so much software with activation codes, it's a major headache to do a complete reinstall.

    :)
     
  2. Genova Win User

    Can't enable Ultrafast Boot in the BIOS, can't disable CSM in Boot

    I have just finished installing everything on my new system and realized that I can't enable Ultrafast Boot in the BIOS. Every time I enable it, it reverts to disabled.

    I'm using an NVM.e m.2 SSD (SK Hynix P31 Gold 1TB). Everything was set to UEFI during the installation process, but I did not have CSM disabled before I installed the operating system, which is Windows 10 Pro 64-bit. I think perhaps part of the problem was that I used a very old graphics card during the installation (nVidia 9800GT), as my processor has no integrated graphics, and I had not yet moved my normal GPU into my new system. But I was able to navigate the UEFI BIOS during the initial BIOS check, so that's probably not it.

    Now I have my more recent GPU attached and trying to enable UltraFast Boot in the ASRock Z590 Steel Legend 6E WiFi motherboard, but it's not working. Trying to disable CSM doesn't work--it keeps auto-reverting to enabled. Although CSM is effectively disabled, since "Launch Storage OpROM Policy" setting is UEFI Only.

    Trying to enable Ultrafast Boot doesn't work: it keeps auto-reverting to disabled.

    For reference, I'm using that m.2 SSD as my main drive and 1 WD Black 6TB WD6001FZWX storage HDD. I did not have the HDD connected when I did the Windows install--only the SSD.

    Isn't there Anything I can do about this without doing a complete reinstall? I've now installed so much software with activation codes, it's a major headache to do a complete reinstall.
     
  3. zbook Win User
    Can't enable Ultrafast Boot in the BIOS, can't disable CSM in Boot

    According to this tutorial there are GPU requirements for ultrafast boot:
    Enable or Disable Fast Boot in UEFI Firmware Settings for Windows


    Code:
     
  4. sygnus21 Win User

    Can't enable Ultrafast Boot in the BIOS, can't disable CSM in Boot

    Can't enable Ultrafast Boot in the BIOS, can't disable CSM in Boot

    That's weird, especially for the R9 290X. I have a Sapphire R9 280X and it certainly supports UEFI.

    Edit: I just thought of something. On you R9 290X is there a dual "BIOS" switch on the side of the card? Example this...


    Can't enable Ultrafast Boot in the BIOS, can't disable CSM in Boot [​IMG]

    Image source: AMD Radeon R9-290X review - Dual BIOS Switch Positions.

    If so, try toggling positions. One side of the BIOS "may" include UEFI. That said, if there is such a switch, they are usually performance boost switches, but...
     
Thema:

Can't enable Ultrafast Boot in the BIOS, can't disable CSM in Boot

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