I have a bit of a situation. I used to have two SSDs, but I was only using one, a 2TB NVMe drive. I decided to remove the other SSD and put the 2TB one in the slot of the removed SSD since that slot is more accessible and not behind the GPU. Ever since I made that switch, I can only access the BIOS, and I can't select the disk to boot from. I thought maybe I could just format the drive from BIOS and do a clean install of Windows. However, my USB pen drive isn't showing up as a boot option, nor can I see my disk listed either. I've tried changing the UEFI settings to CSM, switched motherboard ports, tried flashing the BIOS (the USB shows up there, but I can't take any action), and even done a clean install of the Windows files on the USB, but nothing seems to help. The USB drive works fine on other PCs, and it lights up when connected. Can someone please help me figure this out?
2 Answers
Since your NVMe appears in the BIOS, that's a good start. Just confirming, did you also try using a different USB port, particularly a USB 2.0 port? Sometimes, using USB 3.0 ports can cause issues when booting up. Also, make sure your USB flash drive is indeed configured as a bootable media; if you haven't already, you could reformat it and use the Microsoft Media Creation Tool to create a fresh install drive.
It sounds like your USB drive might not be set up correctly as a bootable drive. First off, check if your NVMe SSD is recognized in the BIOS, because if it is, you might just need to focus on the USB creation. When you created the installation files, did you use the official tool from Microsoft? Using that can ensure the USB drive is bootable. Also, make sure that the USB drive is formatted as FAT32, which is often required for UEFI boot.

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