Single channel was shown from BIOS. I managed to solve the issue by trying another CPU (i5 8500T) which worked fine with the dual channel option. When I replaced it with my i5 8400, the system managed to boot successfully! Weird, since I had reset the BIOS in the beginning. Thank you for the assist!
Hello team,   I am dealing with the issue mentioned at the title. Memory works only on single channel and specially on slots 1 and 3. When I try to use 2 or 4, I am getting the "Orange Blinking 2-7 times" issue. I tried the Slot 1+2 combination, error. Tried the 3+4 combination, same issue. I tried 3 different types of RAM (Kingston Value Ram, Kingston Hyper-X, Crucial), all deal the same issue. Do you think is a motherboard issue, or can be fixed somehow? BIOS is updated to the latest version.
Dell Optiplex 7060 Dual Channel memory issue