Recent content by changememax

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    Question Black screen with cursor on boot after attempting EFI partition migration ?

    Before I get into more diagnostics, I've solved one tiny aspect of this mystery: My Windows 10 desktop backgrounds no longer display because they were images stored on the M2 NVMe drive, which Windows can no longer read. Phew. At least that part was something stupid and simple. I changed the...
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    Question Black screen with cursor on boot after attempting EFI partition migration ?

    These problems keep getting weirder and weirder. I think I have two discrete problems now: The black screen with cursor, and the Windows-unreadable M2 drive. Black Screen with Cursor Before Login I saw @Aeacus' suggestion to remove the graphics card, did some more research, and decided to try...
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    Question Black screen with cursor on boot after attempting EFI partition migration ?

    Welp. I started getting the black screen with cursor again, so I bit the bullet and booted into an Ubuntu live CD so I could delete the EFI partition on the 1TB drive and reformat it. The reformat went fine, the data is whole and uncorrupted, and the old EFI partition is gone, but I'm still...
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    Question Black screen with cursor on boot after attempting EFI partition migration ?

    HUZZAH! It was a BIOS option after all: Advanced\System Agent Configuration\Graphics Configuration\CPU Graphics Multi-Monitor After enabling this, I get my monitors back. In summary, with the updated BIOS, both EFI partitions are listed in the boot priority list as "Windows Boot Manager", so...
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    Question Black screen with cursor on boot after attempting EFI partition migration ?

    Ok, I successfully updated my BIOS to 2902. I'm seemingly able to login to Windows every time now, which is great. Unfortunately, every single one of my extra monitors is now invisible to Windows. They're plugged in through my GPU, an NVIDIA GTX970, so it probably has something to do with that...
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    Question Black screen with cursor on boot after attempting EFI partition migration ?

    Oh no. This is actually getting worse. I decided to just bail out and reinstall Windows again, since I was unable to get back to the login screen even after 20+ reboots with various different BIOS boot settings. However, when I select "Reset this PC" from the boot recovery menu, it demands a...
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    Question Black screen with cursor on boot after attempting EFI partition migration ?

    Running delete partition override on disk 2 partition 4 gives me this message: Virtual Disk Service error: The operation is not supported by the object. The specified command or parameters are not supported on this system. I assume this is because I've been booting from that partition all...
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    Question Black screen with cursor on boot after attempting EFI partition migration ?

    Thanks so much for all that detail @Aeacus. Despite all of that, through whatever fortunate twist of fate, the NVMe drive has been working just fine for the last few months, except for the partition and boot problems. Perhaps it's just running at 2.0 instead of 4.0 since that's what my mobo...
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    Question Black screen with cursor on boot after attempting EFI partition migration ?

    Update: I'm able to get back into my Windows 10 installation, but it almost seems like my motherboard is now choosing one of the EFI partitions randomly every time I restart. Sometimes I get the black screen with cursor, sometimes I get a proper login screen. It's starting to look like my only...
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    Question Black screen with cursor on boot after attempting EFI partition migration ?

    I have three disks: C, an SSD where my Windows installation lives. D, a large slower HD which I use for storage. E, a fancy new M2 with 1TB space Both C and D have been in the machine since I got it almost a decade ago. However, I have an ASUS Z97K motherboard, which was one of the very first...