I work in a public school system and am having a problem with 4 vostros 260s. They were not powering on, in one building, but in another all four work fine. We have replaced power supplies, replaced cmos batteries and updated the bios. Any thoughts?
All four failing at the same time makes me think of checking the electric outlets being used as well as any power surge protectors. Move one to a diff wall of outlets or use a lamp to test the outlets.