Hi,
Setup cannot determine if your existing layout is UEFI. Sure your installation is UEFI and is CSM enabled in BIOS?
Can't install windows 11 - Error code 0x80070003
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Anonymous
I'm trying to install win 11 by windows 11 installation assistant tool,
I don't want to perform a clean installation of win 11 because I have so many games and programs already installed, and reinstalling them will take days.
Windows downloads and starts installation perfectly but when it comes to checking PC I get this message and installation stops
When I close the window I get this error code (0x80070003)
I don't know what causes this issue, performing a PC health check. resetting BIOS and disconnecting every secondary HDD I have changed nothing
Used Microsofts (SetupDiag tool) to get more information, this is what I got
I've tried to install Windows 11 by media creation tool but I get the same error
any help ! thanks 😀
Windows for home | Windows 11 | Install and upgrade
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Anonymous
2021-10-07T16:11:19+00:00 Boot mode is set to UEFI and Windows OS configuration is set to CSM allready.
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Sumit 42,931 Reputation points Volunteer Moderator2021-10-07T16:17:31+00:00 This is the root cause. Disable CSM, enable Secure boot if not and try again.
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Anonymous
2021-10-07T16:54:47+00:00 I've disabled CSM and changed it to UEFI didn't work, then I enabled secure boot and tried again also didn't work 😪
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Sumit 42,931 Reputation points Volunteer Moderator
2021-10-08T02:30:06+00:00 Does the PC boot correctly when you disable CSM?