Rog Strix Hero 3 (G731GU) new NVME SSD problem (hang at ROG boot logo)

[DiabloPower]

Hi,

as stated in the subject I wanted to replace the NVME SSD (Intel SSDPEKNW512G8) with a WD Black SN770 2TB, but failed because the Notebook refuses to boot up at all. I can not even get to the BIOS setting / boot setting. It just sits at the Republic of Gamers boot logo.

First i thought it is not compatible for some reason, so i tried a WD Blue SN570 1TB and even an older ADATA IM2P33F3A 512GB with the same result. (I can confirm that all three drives are in working order)

Any help to solve this problem would be much appreciated!

[DiabloPower]

Update

I've installed a SATA SSD (Intenso Performance 2TB). It is bootable and can be swapped in and out without any problems. The Nvme Problem still persists, even when I use the SATA SDD as boot drive. The System hangs at the ROG Logo when i swap the NVME drive.

Any Ideas are still very welcome!