My computer started making low, inconsistent buzzing sounds yesterday and it's continuing today. I'm guessing it's the fan making the noise or something. There is a guy coming to the house to fix the other computer we have, and I'm guessing when he comes over he can fix this problem too, but that's not until thursday. I was wondering if it would be safe to use the computer from now until thurs when the guy comes over? Or should I not be using it in case it overheats or something? I'm not very good at computers and when I try to do something myself it usually messed something up. Thanks in advance.