Hey Vizth
🙂What RAM? exact kit...leters and numbers code...
When you are doing the musical chairs are you making sure you are seating the RAM properly...it is easy to close the latch on one end without it being seated properly...
Is it always the same slot that appears unpopulated? have you checked each stick individually in red slot right of CPU to see if one is a bad stick...
Reseating the CPU did you give the socket pins a good check to see if any are bent etc. What cooler do you have...is it seated evenly and tightened evenly all the way down?
You setting the RAM up XMP?