Computer Would Not Power ON

Asked By 220 points N/A Posted on -

I have an over 1 year old assembled computer with a 32-bit Windows 7 operating system. It has been working fine until lately, it would not power on. Initially, I was having problem turning on the computer by pressing the power button. I would try to press it many times but the computer would not initialize nor would it create noisy/beep. Most of the times, the computer would start after several attempts of pressing the button. But today, I am pressing on the power button for over an hour now and still no go!

I have tried switching the power cord of my monitor and motherboard, but the monitor lit its LED and the motherboard did not turn on even how hard I’ve pressed the power button. I also tried connecting the power cord directly to the wall outlet (considering that it could be the AVR/power supply causing this), but to no avail.

One thing I’ve noticed whenever I plug in the power cord to the AVR/power supply and power it on, is this sudden spark at the back of the motherboard where the power supply is located. Could it be the motherboard power supply causing this? Or should I say, it’s the power switch button of my computer? What should I do with my issue?

I need help ASAP.

Best Answer by Kathryn
Best Answer
Best Answer
Answered By 0 points N/A #104336

Computer Would Not Power ON


Hi Trixie,

The same thing happened to our desktop computer a year ago. I don't want to add to your frustrations, but these scenarios are very likely and yes, they are both hassle and expensive. If your motherboard is a problem, it might also be traced to the power supply and the CPU fan. When the CPU fan stops working, the power supply overheats and sometimes affects the motherboard.

But please try these steps first before purchasing any hardware:

  • First, unplug the power cord from the power supply.
  • Next, plug the power cord back in then check if the fan is working. You should be able to feel the fan emitting air.
  • If the fan does not work, most likely it is the power supply. You need to replace the power supply. 
  • If the fan is not working, try to check if it has become entangled with another hardware inside the CPU or if it is still plugged in properly.
  • If the fan is working, you may also check on the power supply. If it seems too hot, then most likely it has overheated.
  • Try shaking the CPU or look for loose screws that may have fallen off.
  • If you know how to take out the motherboard, check if there are burnt or damaged parts.
  • A careful inspection of the motherboard also helps. It may have accumulated dust, dirt or black soot. Brush this off with a dry toothbrush or you can also blow dry it. But make sure that your blow dryer is on low, otherwise it might burn the motherboard.
  • Check for bent tips, pins and chips on the motherboard.
  • Press down the chips on the motherboard because they may have loosened. Make sure not to use too much pressure.
  • Make sure that the voltage of your CPU matches that of the power supply.
  • Check also the monitor's power cable for any signs of wear and tear.
  • Check the power supply for signs of overheating such as deformity, black soot, or unusually high temperature.
  • Try to power on your CPU then get a fan and face it to your CPU to help it cool. If it still does not work, you may need to take it to the shop and replace the power supply. Chances are, if the power supply is damaged, your motherboard is also affected since they are close to each other.
Answered By 0 points N/A #104337

Computer Would Not Power ON


Hi Trixie,

You can also try this option but I’m not recommending it to you if you are not familiar inside your CPU case. The possibility that your power on button has been broken or might be the wires of the button that connect to the motherboards is being loosened. I’ve also encountered this problem, what I did is that I replace the reset button connection to the power on connection, so that the reset button is acting as a power on button.

Here's how you do it,

First locate the front panel connector, get your motherboard manual and look for it, here is the closer look of the front panel connector.

Locate the front panel connector

If you found the front panel connector on your motherboard, the only thing you do is switch the plug of reset and power on/off. And that’s it you turn now your reset button into a power on button. Pretty easy!

switch the plug of reset and power on/off.

Now test your computer and try to power on using the reset button (now a power on button). Now about the spark that you see or hear at the back of the CPU case, it’s only normal reaction of flowing electrons on the metal part of the plug and the outlet, but don’t open your computer if there a leaking gas, it might start of sudden spark that can cause of the fire. 

Hope this helps.

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