Computer shows orange blinking light

[fruitie72]

i replaced the power source now i have a orange blinking light. dell c521 model

 

[Emerald]

that is usually a sign of a bad PSU

 

[Hawkeye22]

If this is a server it may have redundant power supplies. They should each have a LED (usually red) that will come on to let you know which PSU is bad.