Power light glowing orange?

Does anyone know what a power light glowing orange when you try to turn on a
Performance 933 means? This started when I dropped the mouse beside the
computer when the side was off. I am pretty sure that it didn't damage the
mouse or touch anything inside the computer and no amount of unplugging the
power cord assists. Is this a known symptom? (It is unaccompanied by any
sort of activity whatsoever on the machine or screen). Did something kill
the motherboard or power supply or something?

 

Eliminate the mouse as the problem first.
Unplug the mouse and try to start up. If it starts, buy a new mouse.

Jack

 

No, disconnecting the mouse was the first thing I tried before posting: It
does nothing whatsoever and the orange light keeps on even after the power
plug is unplugged (until the caps discharge, then you hear a high pitched
switching sound as if it is switching off finally and the process can
re-start).

Is there a service manual somewhere anyone can look up to see what this
orange light means please? It must be an indicator of something?

 

Disconnect externals (mouse, keyboard, etc). Then open up the case and
disconnect everything (pci cards included) but the cpu, psu, video card and
ram. See if it'll boot then.

 

The amber light indicates a failed power supply or overload, with a voltage
loss to the motherboard. If unplugging all drives does not solve the problem
then the power supply needs to be replaced, if the problem clears with the
drives unplugged then reconnect them one at a time to find which one is
causing the problem.

 

The amber light

I too tried any and everything I could think of, then I unplugged the mouse and it worked as though nothing had ever been wrong! The Mouse is the issue, please, Gateways suck!