I have a Inspiron 23 Model 5348 and it just was off one day. I replace the power supply board with a new one and still absolutely nothing comes on. The little reset switch with the amber light on it does nothing unless either unless I unplug the little white connector up by the large fan/large copper things. When I unplug that and push in the reset button the small fan comes on and the amber light comes on but once I plug that back in it all turns off. Any help...please!!