How do I force a PSU to turn on?

[SPL Tech]

I have a 550 watt PSU I got with my case. I want to use it to power some 12VDC lights that will go around my computer. However when I plug it in and turn on the switch in the back of the unit, it does not turn on. So apparently its waiting from a signal from the mobo that is not connected for it to turn on. Well how do I force it to turn on?

 

[aspire]

connect the green wire and any of the black wires on the main motherboard power connector together, using i.e. a paperclip or a piece of wire.

that way, whenever it is plugged in, it will run

 

[MrCoffee]

you'll want a more permanent solution, hot wireing like that is ok for a quick test of the PSU to make sure its working but you dont want to be leaving it like that.

use something like this PSU tester, its basically just a load and switch.