Hello, We are attempting to fix a dreaded e-machine for my parents. It is model T2682. Originally, the power supply stopped functioning, which we replaced after testing it to make sure that was the problem (we purchased it from e-machines). When we attempted to restart the computer, the monitor and computer were not communicating. Realizing that often times, the motherboard is also faulty when the power supply fails with e-machines, we replaced the motherboard, CPU and cooling fan. Still the same issue. Someone suggested it might be faulty memory, so we tried replacing that as well. No go. We have tried unplugging everything and re-plugging it in, one at a time, and have tried different monitors and power cords. The fans and drives turn on but there is no video going to the monitor. Note that the video is built in to the motherboard (with the original as well).