My guess, and it is a guess, is that the Corsair RAM is not compatible. The most compatible RAM is Crucial and available here for your system. Dell systems are very picky about RAM compatibility. And also the Crucial RAM is guaranteed and is returnable.
We purchased an Aurora R11 for my son a little over a year ago. The 1 year warranty expired February 2022. Recently, he tried to install the game "Rust" but can't seem to connect to a server because his RAM is too low (we went with the stock 8GB of memory). So we went ahead and purchased 16GB of Corsair Vengeance LPX 16GB (2x8GB) DDR4 DRAM. We took out the old 8GB memory and installed the two new 8GB memory cards in the slots with the white switches. We powered up the computer, got the Bios prompt that memory had changed. We went into the Bios menu to confirm that the RAM memory had gone from 8GB to 16GB. However, the Bios menu still indicated that only 8GB had been recognized. We exited the Bios menu and allowed Windows to boot up. When we checked the "About" section of Settings, it still listed 8GB of RAM. Additionally, when we opened the task manager and checked the "memory" section of the Performance tab, it shows 8GB of RAM and that only one slot is being used. We tried turning off the computer, swapping the cards between the two white tab slots, and nothing seemed to work as far as the computer recognizing the additional RAM. Out of frustration, we returned the 2x8GB of RAM to Amazon and instead purchased a single 16GB card (Corsair Vengeance LPX 16GB (1 X 16GB) DDR4 3000 (PC4-24000) C16 Desktop memory - black PC memory CMK16GX4M1D3000C16). Again, we powered down the computer, put the single 16GB RAM card. Again, we got the Bios prompt indicating that the RAM has changed. However, after opening the Bios menu, it still shows that only 8GB of memory are recognized. Same thing when you go into windows and check "About" or go into the Performance submenu of the Task Manager (shows 8GB of available RAM). We've also updated to the most recent version of Bios 1.0.15 (or maybe it's 1.0.17? Regardless, it's the latest version). We're completely at our wits' end, and pretty frustrated considering that RAM upgrades are supposed to be easy. Any idea why 1.) the computer doesn't seem to recognize the second slot when we used the 2x8GB configuration, and 2.) the computer can't seem to recognize anything above 8GB or RAM? We're at a complete loss. Like I said, we've gone to the Dell website and made sure all of our software is up to date, we're running the latest version of Bios, we've tried multiple RAM configurations (2x8GB and 1x16GB). What could possibly be the problem here?
Aurora R11, not recognize more than 8GB of RAM