Question MSI MAG B550M Mortar WiFi is stuck on splash-screen during Windows installation ?

Andres Canelson

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Apr 30, 2013
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Hi all,

I have bought new components to update my PC including my MSI board to set up my new desktop.
I have an SSD with windows already from my old setup.
After setting up the build I am trying to installing win10 64 using a USB drive.
The preparation for the install via USB goes as normal however after the pc reboots and prepares installation and boots from my hard drive the install freezes in the moving circle in splash screen.
Iread through forums etc) with no result:
1)Assemble and disassemble the pc again to ensure all components are working properly.
2)Switch Ram locations and tried single ram units in each of the slots to check faulty ram slot or ram unit
3)switched drives (checked with SSD and HDD/the same result)
4)checked boot with both UEFI and CSM
5) Tried different USB sticks to boot windows
6)Unplugging all USB devices prior to boot from the drive (just in case)


Please I would be grateful for some tips as I am tring not to grab my PC and check if it learns to fly via the nearest window.

My setup is:
MSI MAG B560m mortal wifi
i9 11900k
2x16gb 3600 Corsair Vengeance RGB Pro

Gigabyte Geforce gtx 1660 super OC 6gb
SSD sandisk 250gb
SSD samsung EVO 870 120 gb
HDD 4tb WD Black
WD 1TB
PSU: Corsair CX 600m

Parts in bold text are new.
I checked and before buying and everything is compatible.