Windows Not Loading from a Cloned SSD

[the_bullet_01]

Hello!
I have the Asus K571GT, 256GB on the SSD and 1TB on the HDD.
I bought a 2TB SSD, "WD_BLACK 2TB SN770 NVMe Internal Gaming SSD Solid State Drive - Gen4 PCIe, M.2 2280", and got an SSK enclosure and used Macrium to clone my SSD (SSD = C Drive with Windows) to the new SSD.

The K571GT runs on a Gen 3, but I checked online AND confirmed with Asus Support and they said the Gen 4 is backwards compatible and will still run on my laptop, just at Gen 3 speeds.

Downloaded Macrium, followed a tutorial via YouTube about the steps to take. Cloning was successful.
Open up the Laptop, swapped out the old SSD for the new SSD.
Booted back up, and the laptop is stuck on the ASUS loading screen.

Waited a few minutes and Windows never loaded.
Held down the F2 button and powered up, and I can't even load into BIOS.

Eventually I swapped out the New SSD for the old one, and I'm back online again.
I plug in the cloned SSD via USB-C port, Windows recognizes it.
But when its inserted into the SSD slot inside the computer, the computer just doesn't recognize it at all.

What went wrong? And how can I fix this?

[eyebrowz]

Hi

Dunno.

Is the BIOS Boot Manager still pointing at the old/removed device, or have you updated the boot parameters to the new device?

I dont know what your Boot Manager will look like, or even be called, but it is the ST1000LM024 value that needs amending.

Maybe a W11 install USB and try Repair to fix boot problems. 

[the_bullet_01 · Accepted solution]

I figured  it out.
ASUS Support asked what I was upgrading my SSD to, and I said a 2TB, and they said nothing.
Spent 2 weeks trying to figure out the issue.
Contacted Support again, asking about the specifics of the laptop, assuming a hardware issue, and they said the laptop is optimized for 1TB, but could go up to 2 TB.

So I sent back the 2TB, bought a Samsung 1TB, did the clone using Samsung Magician, and worked instantaneously.