In modern PC systems, ATX power switch works by momentarily shorting connection between two pins on motherboard. This sends a signal to turn on PC. In rare cases, a problem can cause ATX power switch not to work correctly. Change power switch to solve this problem.

Instructions

1. Shut down PC. Open PC frame to expose motherboard. In many cases, PC chassis is opened by pulling a lever on back, pushing a button, or removing a row of screws.

2. Take out plastic bezel covering front of PC chassis. Usually, this is proficient by pushing a tab on every corner of bezel. The bezel has a plastic button which depresses ATX power switch when pushed. After removing the bezel, the ATX power switch will be exposed. Press on the switch. If PC starts effectively, the switch does not have a problem. A latest plastic bezel must be ordered from PC Company, as power button either sticks or does not depress fully.

3. Detach power cable from back of PC.

4. Locate power header on motherboard. The power header is a tiny plastic part attaching two pins on motherboard. Coming from header will be two wires, usually green and white. The wires will cause power switch at front of PC framework. Note that pins that power header is attached to and then remove it from motherboard.

5. Check power switch at front of PC chassis. If it has a screw on either side, take out screws and press power switch assembly out of framework. If it has no screws, it must snap out of place.

6. Thread the power header and green and white wires of latest ATX power switch assembly through hole in front of PC framework and then press assembly into place. Screw it down if needed.

7. Attach power header to motherboard and change power cable in back of PC. Press new power switch and verify that PC turns on and boots.

8. Change plastic front bezel and shut the PC case.