Help for a PC Start Button That Doesn't Work
There's nothing worse than when your PC doesn't turn on. It's bad enough when your software or hardware stops working properly, but an inoperative power button can really put a hamper on your productivity. When dealing with a start button that refuses to work, there are a few things you should check out first. Be prepared to open and inspect your computer's insides, as the problem could be a motherboard or power supply issue.
Rule out the obvious
Before opening your computer case, make sure your computer is plugged into a working outlet. If the outlet is part of a power strip or power supply, make sure it is turned on. Also, ensure the power switch on the back of your computer is flipped to the "on" position. This switch is part of your power supply and is located near the AC plug. If your computer still doesn't turn on, it's time to open up your computer and inspect it physically for problematic devices and connections.
Motherboard issues
Your PC's front power, reset buttons and LED lighting are connected to your motherboard via small wires and pin connectors. When you open your computer, they are usually located on the lower right-hand side and are immediately recognizable as a group of twisted, colored wires. These are labeled as to their function. The alignment and position of the specific motherboard pins that control the power switch may be different depending on your motherboard, so consult the instruction manual to learn the exact location of the power and reset button pins. Often they are grouped together as a multifunction connector; sometimes they are separated. Generally, they will be located in the lower-right-hand portion of the motherboard. Make sure the colored wires are plugged into these pin connectors correctly. Remember, they only work when plugged in the correct direction.
Power supply
A non-starting computer may be caused by a faulty power supply. It's common for older or inexpensive power supplies to short out or just die after long periods of use. Also, certain drives may short out a power supply if they are older or become damaged. Try disconnecting the drives one-by-one from the power supply while attempting to turn the power back on. If it turns on after disconnecting a particular drive, replace the drive with a newer model. If your computer still won't turn on, you may need to replace your power supply.
Considerations
When replacing your power supply, it's advisable to choose one that meets your computer's energy needs. For instance, if you have multiple hard drives or a powerful graphics card, buy a power supply that has ample power and voltage on the 12V rail to power these devices to avoid future problems. Also, when working inside your computer, ground yourself by wearing an approved anti-static wrist strap or by touching the chassis of your computer.
Tags: your computer, power supply, your power, your power supply, Button That Doesn, colored wires