why cant i get my pc to turn off ?

[mike]

ive just replaced a faulty motherboard. installed everything and all works ok but cant get it to switch off, when i shut down windows it says that it is now safe to switch of your computer, but when i hit the power switch nothing happens, i think i have got all the wires on properly though i noticed than no led's are working, is there a main wire that i have missed or somthing ?ÂÂ! please can you help...

Thread is old and locked - MidiMoto

[syphus]

Hi mike, welcome to itsallPC

You have obviously not wired the Front Panel correctly (if at all). The Front Panel is two rows of pins, usually located on the lower right of the motherboard. The Reset Button, Power Button, HDD LED, Power LED and speaker should be attached here.

Often, the front panel is colour coded or has markings like HD-LED, RESET etc, but you will probably need to consult your motherboard manual. Be aware that LEDs are polarised, that is to say, they must be connected the correct way around. usually, one pin will have a +, which corresponds to the coloured wire, as opposed to the white one).

Often, it will go something like this:

• Two or Three green pins for Power LED (PLED). If the case front panel has two pins, connect them to pin 1 and 3. Green wire connects to the +.
• Two red pins for the HDD LED. Read wire connects to the +.
• Two blue pins for the Reset (RST) button.
• Two black pins for the Power (PWR) button.
• Four brown/orange pins for the speaker.

Some motherboard/case manufacturers break this convention however.

[mike]

Thanks for the quick responce, ive just checked the wires and all ok, apart from the hdd led which was upside down. the power terminal is marked power sw, and the m/board pin is marked spwr, ive tried it both ways round now and no joy, any more ideas.... OK since yesterday ive become a step closer, for some reason or another it is now switching off the monitor when i press power switch but the pc is staying on, when i press the power switch again i get back to " it is now safe to turn off your pc" screen, any ideas anyone pls

[Tom]

I had an old PC once, when it said that "It is now safe to turn of your computer" we just switched it off at the plug socket?