so my CPU fan has stopped! when I booot my pc it works just and after like 5 mins it just stops spinning! and I also have 2 extra 120mm fans and I noticed one of them has stopped too and when I gave it a little push it spins very slow! could this be power insufficiency? I also noticed that my case fan seems to be working fine when I'm in bios but once i get to the desktop boooph it just stops!!