I suddenly noticed, my xaser vi's top exhaust fan is making noise during boot up. It stays for 2 to 3 minutes then everything becomes normal. I checked the fan. No dust or other things that's causing this problem. I also checked system temperature.
In our country there is no warranty for PC Case You said, it is not adjusted totally. Is it something from mobo or psu where it's not attached properly. As for broken blade, I checked but not found any damage of fan.