Question Windows won't load after after first restart on new PC ?

Jun 18, 2021
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I hope this is the right grouping for this question.

Today i built a new gaming rig for my friend, everything went well until we came to the installation part of the OS. We installed Windows just fine, got to the Desktop, all fine. After we shut the PC down and booted it, the loading circle didn't even load and the PC was stuck on the MSI logo (or somethint similar) all the time. We tried to get into BIOS and reinstall Windows, got to the same point as the first time, then it was stuck again.

Anyone know how to fix this?
thanks in advance