IBM X226 server

i have two x-series server but in one server with one power cords it is showing green light but in case of another server it is comming yellow light.

I believe that is due to there only being one power cord connected to the unit. Those eServers have two power cord connections in the back. If you only have one plugged it, it will cause the front indicator to show yellow instead of green.

If you do have both power cords plugged in, then you might have a bad or power unit on the system. When the system is at a safe place (BIOS/etc), try unplugging one cord at a time to see if the system shuts down. If so, then you've found your problem.

-Chip