Asus Laptop Replaced SSD Cant Boot Windows After Install

Oh k, if my drive is nvme then i have no idea why its not being shown in the bios then, its the same size too

xboxhaxorz said:

Oh k, if my drive is nvme then i have no idea why its not being shown in the bios then, its the same size too

Your bios does not support NVMe. Windows 10 does have support for NVMe. It's like running Windows 10 on a legacy bios computer with a second hard drive that is GPT partitioned. The legacy BIOS itself cannot see the GPT partitions, therefore cannot boot from a GPT partitioned drive, but once Windows loads, then the drive is accessible using the Windows driver.

The original SSD is not NVMe - it is shown as having MLC - Multi Level Cell NAND. I believe, but I am entirely 100% certain, that this is the same as 3D NAND:
Intel 660p Series M.2 2280 512GB PCI-Express 3.0 x4 3D NAND Internal Solid State Drive SSDPEKNW512G8XT - Newegg.com

And that's the reason you can't boot Windows from the NVMe SSD. Maybe there is a UEFI firmware upgrade for the laptop that supports NVMe?

NavyLCDR said:

Your bios does not support NVMe. Windows 10 does have support for NVMe. It's like running Windows 10 on a legacy bios computer with a second hard drive that is GPT partitioned. The legacy BIOS itself cannot see the GPT partitions, therefore cannot boot from a GPT partitioned drive, but once Windows loads, then the drive is accessible using the Windows driver.

The original SSD is not NVMe - it is shown as having MLC - Multi Level Cell NAND. I believe, but I am entirely 100% certain, that this is the same as 3D NAND:
Intel 660p Series M.2 2280 512GB PCI-Express 3.0 x4 3D NAND Internal Solid State Drive SSDPEKNW512G8XT - Newegg.com

And that's the reason you can't boot Windows from the NVMe SSD. Maybe there is a UEFI firmware upgrade for the laptop that supports NVMe?

I don't get it. The mzhpv512hdgl is supposed to be an SM951 drive. An SM951 drive is supposed to support NVME. (My memory is a bit hazy, but it may have been Samsung's first M.2 NVME drive for the desktop market.) Is either one of those false?

NavyLCDR said:

According to this webpage:
Samsung SM951 512GB (AHCI) specifications

The SM951 came in two different versions. AHCI and NVMe. The original SSD was AHCI.

Well, darn, that's confusing.

I suppose that it's a natural consequence of the SM951 being one of the first consumer-level NVME M.2 drives on the market, nearly 4 years ago.

I's too bad that Intel didn't design NVME to be backwards compatible with plain PCI-E.

NavyLCDR said:

Your bios does not support NVMe. Windows 10 does have support for NVMe. It's like running Windows 10 on a legacy bios computer with a second hard drive that is GPT partitioned. The legacy BIOS itself cannot see the GPT partitions, therefore cannot boot from a GPT partitioned drive, but once Windows loads, then the drive is accessible using the Windows driver.

The original SSD is not NVMe - it is shown as having MLC - Multi Level Cell NAND. I believe, but I am entirely 100% certain, that this is the same as 3D NAND:
Intel 660p Series M.2 2280 512GB PCI-Express 3.0 x4 3D NAND Internal Solid State Drive SSDPEKNW512G8XT - Newegg.com

And that's the reason you can't boot Windows from the NVMe SSD. Maybe there is a UEFI firmware upgrade for the laptop that supports NVMe?

Ahh that does make sense, and it sucks lol

That 970 pro is a beast too beastly for my machine

I have contacted asus about it, perhaps they do have another firmware

xboxhaxorz said:

Ahh that does make sense, and it sucks lol

That 970 pro is a beast too beastly for my machine

I have contacted asus about it, perhaps they do have another firmware

Read further down in the thread. I found out that your original SSD came in both AHCI and NVMe formats. The original SSD was AHCI which is all your EFI firmware recognizes. So, currently, you would have to replace it with a PCIe 3.0x4 AHCI SSD, not NVMe, if you wanted to boot from it.