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MMcNa2
Beginner
2,660 Views

Inaccessible boot device on nuc7i7bnh

I'm trying to install Windows 10 on to a nuc7i7bnh with a samsung evo 960 m.2, but always get ci.dll missing during windows install (windows 64 bit). any ideas?

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4 Replies
jema
Novice
272 Views

The error is new to me but appears to be related to a virus, how ever strange that may sound.

Do you have another installation media to try?

https://answers.microsoft.com/en-us/windows/forum/windows_7-update/boot-critical-file-ccidll-is-corr... boot critical file C:\CI.dll is corrupt - Microsoft Community

https://www.sevenforums.com/bsod-help-support/163344-c-ci-dll-corrupt-file-crash-help.html C:\CI.dll Corrupt file crash - help! Solved - Windows 7 Help Forums

LeonWaksman
Super User
272 Views

HelloMarkMac ,

1. Prepare Windows Installation Media using Microsoft Media Creation Tool: https://www.microsoft.com/en-us/software-download/windows10 Download Windows 10

2. Install Windows 10 following this tutorial: https://www.tenforums.com/tutorials/1950-clean-install-windows-10-a.html Windows 10 Help Forums (install Windows with UEFI bios - para.13)

Leon

n_scott_pearson
Super User Retired Employee
272 Views

Just to be clear, NVMe M.2 SSDs absolutely require UEFI to be enabled and utilized. Legacy installations will not work (will not see boot device).

Your Windows Installation media *must* use GPT partitioning and only boot under UEFI. I have found that the best way to produce good media is to only use the Microsoft tool to download the Windows Installation ISO file. You then use a tool like RUFUS tool to load the ISO onto the USB flash disk with it properly formatted with GPT partitioning.

If you performed an install to the NVMe M.2 SSD while in Legacy mode, you will not be able to boot from the SSD. Once you fix the installation media and have booted in UEFI mode, you will need to delete all partitions created on the SSD and then tell Windows to install to the SSDs free space (which now encompasses the whole drive). This is required to ensure that the MBR partition table you accidentally created the first time is removed and replaced with a proper GPT partition table. Further, this process allows Windows to make the appropriate decisions on partitions and partition sizes necessary.

Hope this helps,

...S

MMcNa2
Beginner
272 Views

Thanks all for your help. Had issues with the new Windows 10 USB boot device created using a USB3 connection - worked first time when created under USB2. Not sure if coincidence or something else going on. All good in the end and the NUC works like a dream.

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