Aurora R12, won’t boot with new 5700 XT

There were 2 PSUs available on the R12. A 550W and a 1000W, which do you have? I ask because the minimum PSU requirement for the 5700XT is 800W. Also required is a 6 pin and an 8 pin power plug.

It has 1000w psu. All plugs in right. Nvidia card always boots to windows, when I put in amd card it just gets stuck on Alienware initial logo. 

What if you install both nvidia and amd card in R12 if your psu has enough connectors for both card.  If not possible, find a simple low power nvidia card and boot from that while having amd card installed too.  If nvidia card boots into Windows 11 look inside device manager at display adapter.  Does it detect the amd card?  if not download the amd driver and install the driver.

What was the original Nvidia video card?

We used the dual slot OEM AMD/ECS RX 5700 XT R19D-E90 video card =
* TDP 225W
* One 6-pin and one 8-pin auxiliary connector
* Memory clock (Maximum): Up to 1750 MHz
* Base clock (Maximum): Up to 1605 MHz
* Game clock (Maximum): Up to 1755 MHz
* Boost clock (Maximum): Up to 1905 MHz

Who manufactured your 5700 XT?

for reference the Dell OEM RX 5700XT card is AMD Radeon RX 5700 XT 8GB GDDR6 Graphics Card Dell 4FCCX

I am slightly confused. From what I read:

It shipped with a 5700XT, it had an Nvidia card in it when you got it, and you want to put in a 5700XT?

Must be an UEFI issue. I have seen this before, where some video cards produce black screens.

@speedstep is the expert in the required settings to get this to work.

Secure boot must be OFF and Legacy Roms must be OFF.

UEFI GPT boot must be on.

Make sure PCI-E SERR MSG is OFF in bios then add the card.

Re: It will only boot to a Alienware logo. Can’t get into BIOS either. Updated bios and turned off secure boot. Is their anything else I need to do for it to boot with the AMD card?

secure boot turned off already.  

here is an anecdote: “Had the same problem here when upgrading from RX 580 to 5700 XT … The culprit: the PCIe slot. Fun fact: only the new card doesn't work on the top x16 slot, the old one still does, without any hurdle, everytime I put it in. Now the 5700 will only work on the bottom PCIe x8 slot.”  

Try another PCIe slot in R12.

PS contrary to common understanding, user had reported in some Dell PC secure boot needs to be turned on in order to boot gpu.  Therefore do not hold the “secure boot off” as a dogma.

@speedstep​ What BIOS are you looking at?  I'm on BIOS version 1.1.20 Alienware Aurora R12.

I can turn Secure boot off but none of these other options are available. Turning Sucure boot off only sent me into 2 blue screens then a repair screen.

I didn't think you could disable Secure Boot and run in Windows 11??

 is there some software that i need to install?  How is this machine even legal to sell????? the air cooling confige will thermal throttle itself with one chrome window open and there clearly a software block of some sort keeping  me from swapping my GPU.  This is a huge anti consumer over priced peace of E-waste that should have never been! Really feel sorry for the ppl that spent money on one  of these.

@Mauiwowie86​   what are your specs and what operating system are you running?

There is no software block . . . many, many 3rd party graphics cards have been swapped into the Aurora R12.

gtx 960 no problem fires right up. 1070ti agian no issue. But with any AMD card i try with windows 10 or 11 secure boot on/off deployed mode or Audit, Optimized Defaults, even tried every PCI-E slot x4's the x8 doesnt matter No AMD card will get past the frozen Splash screen no matter what i do.