ok i cleaned my desktop pc from all the thick dust i removed the fan from the cpu heatsink cleaned it n the heatsink screwed the fan backup to the heatsink n now i get a loud buzzing noise during the boot up sequence but i think i may have put my fan on backwards because i forgot how i took it off im goin to try to turn it around and i think it wont make that sound but will it be on rite i think rite now the fans blowing air from the heatsink
