Sorry, I didn’t get back to this forum because I solved the issue. Basically, I have to remove all 4 RAM sticks (Crucial Ballistix), and put the original Dell RAM sticks for it to work. Then I removed the original RAM, and installed the Crucial Ballistix RAM & it worked like charm.  Every once in a while it does the same thing, and I have redo the whole steps again to get it to work. This will be the last time I ever buy Dell products.
Hello, Tonight I've updated my Aurora R8 including the BIOS firmware update. Everything went smoothly, the system updated successfully; however, when it rebooted, it started to flash yellow four times, pause, flash yellow four times. I've done my research of what the issue was, and I opened my system to double-check everything is in place--including the RAM (yes, I've also removed & switched the RAMS). Nothing seems to be working. At this point, I think the BIOS update was corrupted, or it BRICKED my motherboard. Do I have to replace the BIOS chip ? Best Regards, Joseph S.
Aurora R8, flashing yellow lights 4 times after the BIOS update