??? Uhm ? i have here now for installing a Aspire one 150 Win. This aao is nearly quiet ! Mine is triple as loud. The Fan of my One makes noise llike this: BRRRRRRRRRRRRRRRRRRRRRR and the other One like this : wwwwwwwwwwwwwwwwwwwwwww my gilfriend is asking me every time i switch it on to switch it out again. she iss nerved.. I also ! of course !! hmn so i have to send it back to acer ? cheers r.