Has anyone had trouble with their DELL pc's? I've had mine for six months and it goes off and I can't get it back on. I've called/emailed, etc about five times. They tell me to plug/unplug it from the wall and to unplug/plug it from the cpu tower, etc. After that, it doesn't work again. I get a new computer and I have to do all that to keep it up and running? Has anyone else had this problem with DELL pcs? Mine is the DELL Dimension 8300. I'd be anxious to hear any suggestions. I get tired of call their tech service people and waiting for ever on the phone.