dell optiplex 755 power button flashing orange

Question

i have a Dell Optiplex 755 when i turn it on i just get a flashing orange light from the power button.

I know there is power going to the motherboard as there is an orange light that is on.

i have tried a power flush and changed the power supply and flushed the cmos but it still flashes orange and wont boot up the machine.

Answer 1

On Dell's Optiplex series, if the power button is flashing amber, that indicates a power supply problem. However, you said you replaced the power supply... If you are sure the power supply you put in was good, then unfortunately your motherboard is probably dead.