>>485 I Have two desktop machines from the United States. I left them on over the week-end, but I did not leave the air conditioner on too. They are both out of service now. I have replaced the power supplies, but that did not fix it, there are no beeps on the mother boards. I will need to find new mother boards. Both machines have four hard drives and are in a raid 01 configuration. When I find the mother boards that I can use, then I will try to recover them.