Dell Inspiron 4000 notebook with Windows ME overheats. Back from Dell Repair for the 4th time. They have replaced just about everything and now say the problem is the CD-ROM. However, I swapped out the CD and it still overheats. Dell claims they canfind nothing wrong. Now we’ve noticed that it only overheats when connected to the network (home network with router connected to desktop and cable modem). The notebook did not overheat until Dell replaced the system board to fix a loose USB port. Any ideas what is going on here?