IINoNameII

Thank you for reporting back it is fixed. Your findings about your drive ports prompted me to look at my own in UEFI. I was glad to see...

Thank you guys so much! I tried what Glasskuter said and checked if I could disable the m.2 SSDs in the BIOS without removing them...

I did this procedure is some computers with multiple SATA drives. I never did it with multi M.2 drives but I suppose you can also do it .

On a clean install there is no need to convert the drive to GPT or create partitions. The installation process does it for you. Reset...

That is the best solution. When done don't forget to enlarge the Recovery partition to 1 G. There are many ways to do it. Best way is to...

Thank you so much for your answers guys! Then I will first try Glasskuter's suggestion and do a clean install with just the main drive...

The reason your partitions are not built correctly is because you had all your drives connected during the install. Window installs this...

diskpart select vol c shrink desired=100 create part EFI format fs=fat32 assign letter=s exit bcdboot C:\Windows /s S: /f UEFI diskpart...

Glasskuter gave you the explanation and NavyLCDR gave you the instructions on how to fix it, creating on drive 0 a EFI partition and...

Oh, I also tried the obvious first step: removing the old 970 Pro drive and only leaving in the new Windows install on the 990 Pro. But...

Hey guys, I hope you can help me with this - let me first say that I just built my first PC (previously I only had already built...