light flickers

I have a Razer keyboard plugged into my gaming laptop (model 15ACH6-976), and I noticed that whenever I turned on my floor fan my Keyboard lights flicker for roughly less than a second. The weird thing is that when I previously had all my devices (laptop and fan included) plugged into the same...

When I put my ram in dim slots 2 and 4 my pc does not boot up and my led fans starts to flicker. 1 and 3 also don’t work and think the motherboard has an issue. I recently just bought everything for a upgrade and when I installed it, my pc won’t boot up in dual channel but only single...