I built my PC a couple weeks ago. https://pcpartpicker.com/list/tzRVZ8 is the build. I was reading through the owners manual of the mobo and it said if running only one stick of ram, put it in DIMM 2, so I went to switch it and I dropped it. When I put it back in I've numerous problems. Random crashes with a myriad of error codes Sometimes it just won't boot all the way. So I tried to run memtest from a usb. It is not showing that I have any ram now. I have a picture but not sure how to upload it to this forum. The part that is troubling is "RAM: 0 MHz (DDR3- 0) since it is DDR4.