On/Off Switch

[AJK101]

Does a motherboard have a built in on/off switch. If so where can I find It?

 

[mdd1963]

it does not; the case sends a momentary signal to the MB's power switch connector, which then either powers it off or does an orderly shutdown, normally the latter...

The only way to fully power a MB down (and instantly) is to switch off the PSU at the rear...(not adviseable with your system up and running, better to do orderly shutdowns when possible...)

 

[AJK101]

sorry, should have been more detailed : I do not have a case, just a bunch of parts put together on a table, now when i switched on the main power supply, power LED came on, but nothing else works. For this reason, i was wondering about this.

 

[jsc]

Some motherboards have built in power and reset switches. Most do not. If you have a breadboarded (assembled without a case) system, the simplest way to start the computer is with a paper clip. From the back of the plugged in main power connector, momentarily short the green wire to one of the adjacent black wires.

Because I do a lot of breadboarding, I made a small breakout box from wiring salvaged from an old case.
http://www.tomshardware.com/forum/262730-31-breadboarding

And, as the thread noted, the eVGA 680i board does have builtin switches.

 

[slo]

just short the pins that the powerbutton would normally connect to. Thats what the button does anyway, just shorts those two pins.

 

[AJK101]

Thanks a lot, I did that, and yet the led that shows the power on/off doesn't pass any current onto the buzzer I have, so I am guessing there is some other problem that I cannot comprehend yet