I have a Dell Dimension 4400 1.6P4 512mb ram, 40gb HD, 32MB AGP video. A few weeks ago it started hanging while OS was up and running. Then it started hanging intermittingly on and off even in bios and using a Ghost boot disk.
Through the process of selective interchange I have replaced almost everything except for the motherboard and processor. I have replaced the fan for the CPU but that yielded no change. (The CPU fan is one that is made into a plastic shroud)
I'm thinking it’s the motherboard but just wanted some others 2nd opinion.