My build: msi z690a, intel i5 12400, adata spectrix 3200hz ram, Samsung 970 evo plus ssd and multiple sata drives. I had successfully installed my drives and windows and things were working well. However, my Ram failed to reach 3200 hz and stuck at 2800hz. As a result, I asked for help from the msi service team. They recommended me to unplug power cord and clear cmos. I did accordingly. I was not able to make the computer boot above 2800hz and I repeated this process of resetting the cmos for three times. When I decide to give up, I discover that I cannot even go to windows. After hours of inspection, I found in the bios that the motherboard can detect none of my sata and m2 drives despite the power cords and cables were connected. However, they could all be found in flash mode and the files are there. Now I am stuck with a dysfunctional computer. Can anyone give me some advice? Many thanks