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April 22nd, 2022 14:00
Dell Inspiron 15 5000 Series P75F BSOD Inaccessible Boot Device after motherboard replacement
I am currently having an issue with my laptop. The audio jack went out on it, so I ordered a new motherboard instead of fooling around with soldering. The computer worked 100% before, but now after replacement of the motherboard will not boot. At first I had no screen display and restarted it a few times before the display came up. It had me re-enter the service tag number and then started a BSOD loop with an Inaccessible Boot Device code. So far I've attempted a cold boot after resetting CMOS battery and internal battery. I've tried switching between UEFI and Legacy. I've also made sure ACHI was enabled, tried with and without secure boot, and I've tried manually booting to both the HDD and the SSD.
iApollo
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April 22nd, 2022 14:00
That's what I was hoping to avoid since I don't have access to my Windows 10 product registration key. Any idea how I can recover that? I'll attempt this after copying over old motherboard settings.
ejn63
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April 22nd, 2022 14:00
The boot settings need to be exactly the same as they were on the original board -- if it was a factory install from Dell on the drive, UEFI (legacy/CSM off), secure boot ON, and the Windows boot manager as the default boot device.
If they were changed at any point (during an OS reinstall, etc.) they must be reset to whatever they were on the system before the mainboard failed.
Beyond that, back up the data on the drive using an external adapter and a working system, and reload everything from bare metal.
ejn63
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April 25th, 2022 08:00
If the registration key is retail (i.e., you purchased it yourself), it should be available in your Microsoft account if Windows was activated and registered to it.
For any more than that, the path forward depends upon the board you've purchased. If it was removed intact from a Dell system, it should have a Windows key embedded on it. If it was a replacement board, it may not - in which case you'll need to call Microsoft to activate Windows (which may in turn tell you that you need to purchase a new license key, since MS usually considers a mainboard replacement grounds for needing a new license key).
iApollo
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April 25th, 2022 08:00
All the boot settings appear to be the same. Any ideas on retrieving the Windows registration key?