Aurora R11, upgrade RTX 3090 Issues

Will not be a driver issue if it does not make it past the post screen.

Likely not a good card, or possibly under powered PSU. What PSU did you have in your R11? Also make sure all power connectors to the card are plugged in.

Always check the FAQ at the top of the screen before purchasing things: OEM RTX Specs 

Part number = M8HMD
Platforms = Aurora R12/R11/R10
Card dimensions = Length: 267mm, Height: 114mm, Width: 50mm
Maximum Power Consumption = 350W
Power connectors = Two PCIe 8 pin
Ports = Three DisplayPort 1.4a, one HDMI 2.1
Memory = Type: GDDR6X, Size: 24GB, Interface width: 384 bits
Graphics bus = PCIe speed 4.0, PCIe width x16
GPU = Nvidia CUDA cores: 10496, Base clock: 1.39 GHz, Boost clock: 1.69 GHz

The thing that matters the most: Card dimensions = Length: 267mm, Height: 114mm, Width: 50mm

Then go here to find the retail cards that match those dimensions: Video card dimensions 

This would have fitted as it is only 1mm longer: RTX 3090 

Thanks for the Reply!

PSU is 1000w. All power connectors are plugged in.

Also, to fit in the chassis, the power connectors must be on the side of the card. Typically they are not included in the length so if they are at the end of the card, its not gonna fit. I made that mistake with a Gigabyte 3080 card. Bought it off Amazon, got it shipped, opened it up, and it'll fit... if I don't want to plug it in. All that is why I resorted to eBay and finding a 3090 that I thought was new or newish.

I would at least try a different display cable and display ports on the card before calling it bad. Might be worth sending it to someone for repair. The dell rtx 3090 is great card ! 
send it to Northridgefix  look him up on YouTube 

I would suggest you contact E-bay and ask for a refund, if what all you've said is correct, then the graphics card is faulty. E-bay is very strict on things working properly, so contacting them and getting a refund is your best option, and with that money you can buy another RTX 3090 which might work.

There's a new wrinkle. I refunded the card and bought a new one on ebay and it did the same thing. The chances of two cards being inoperable is astronomical. I think my machine is the issue an I'm at a loss. Here's the specs at purchase:

10th Gen Intel Core i9 10900K (10-Core, 20MB Cache, 3.7GHz to 5.3GHz w/Thermal Velocity Boost)
32GB Dual Channel HyperX(FM) FURY DDR4 XMP at 3200MHz
Windows 10 Home 64bit English
NVIDIA GeForce RTX 2080 Ti 11GB GDDR6 (OC Ready)
Lunar Light
1TB M.2 PCIe NVMe SSD
Lunar Light chassis with High-Performance CPU Liquid Cooling and 1000W Power Supply
Killer(TM) Wi-Fi 6 AX1650 (2x2) 802.11ax Wireless and Bluetooth 5.1
Wired Multimedia Keyboard (English)
Optical Mouse MS116AW
Custom Configuration
Driver Software
US Power Cord

I upgraded my ram to 4 16gb sticks kingston fury DDR4

This is what its doing when the 3090 is installed.

Hey mate, i have exactly the same problem with the same bands did you fix it? If yes how? Thanks. 

Its been a minute, but I believe I checked the inputs on my TV (my TV is my monitor) There was an HDMI port on my TV that was capable of VRR (Variable Refresh Rate). I connected to it with an HDMI cable that was capable of an 8K transfer. Apparently not all HDMI ports are created equal. Turns out that the first 3090 card I bought on EBAY was probably fine.

BTW this community has forced me to change my user name for some reason in case you were wondering.

There are different HDMI standards. HDMI 2.0 allows for 18 GBPS transfer rates, HDMI 2.1 allows for 48 GBPS transfer rates. That is 60 Hz and 120 Hz frame rates at 4K, with the correct cable.

So what version of HDMI port and refresh rate are you using right now?