Question about Dell Inspiron 530s Desktop Computer

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I can't get the power button to turn on computer

The button doesn't seem to be working is there another way to turn it on

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  • Contributor
  • 22 Answers

Is the button stuck? It could be a defaulted button. You may have to take it to a computer store to get it checked out.

Posted on Nov 29, 2012

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  • Dell Master
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Yes Donna.

Uses the same method, as testing to see if the problem is the Power On switch, or the Power Supply.

Bypass the Power On switch.

Something I want to post before we go on;

The Power Supply in your computer is a converter.
Converts high voltage AC electricity, into low DC Voltages.

AC input power differs from country to country.
If I am correct;
Japan - 100 Volts AC (Depending on where in country)
US - 120 Volts AC
Europe - 240 Volts AC
Australia - 240 Volts AC

Converts into;
3.3 Volts, 5 Volts, and 12 Volts, and all DC Voltage.
In comparison two D cell flashlight batteries produce 3 Volts DC.

The Soft Power On circuit you will be dealing with, uses 5 Volts DC.

Dell Inspiron 530S motherboard illustration; no hardware, or cables attached,

Click on Manuals & Documentation
Click on Owners Manual (12090KB)

Ignore if you are aware;
This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
After you click on the above file name, it may take up to 30 seconds before the first page comes up.

To go on;

In the Bookmarks menu to the left; click on the + sign next to -
Removing and installing parts
Now click right on - System Board Components

[ Zoom Out icon at top ( - ) reduces the view size, when you click on it. Zoom In icon ( + ) increases the view size ]

No.7 points to the connector on the motherboard, for the
24-pin ATX main power cable.

Here is a photo of the motherboard; Top View.
It is also turned 90 degrees to the Right; in comparison to how it is actually mounted in the computer case.

See the whitish rectangular connector at the bottom, that has 24 socket holes?
24-pin ATX main power cable connector, on the motherboard.

This is a general example of a 24-pin ATX main power cable; and it's respective connector on the motherboard,

View the photo to the right. Shows main power cable plugged in. This is what you want.

The GREEN wire is the Soft Power On wire.
ANY Black wire you see is a Ground wire.
Use a jumper wire to MOMENTARILY connect the Green wire, to ANY Black wire.

Does NOT involve cutting on any wire's insulation.
The preferred jumper wire is a paper clip.

The paper clip is straightened out, then bent into a U-shape.
The top of the U is wrapped a few times with black plastic electrical tape.
This taped area is for your fingers, and thumb to hold onto.

Turn the U upside down, and it is the 'legs' of the U-shaped jumper wire, that you are going to use.

The Back of the main power wire's connector, is where the wires go in.
One leg of the U-shaped jumper wire, goes down into the socket hole, with the Green wire in it.

RIGHT NEXT TO the Green wire.

Slides past the green insulation of the wire, and touches a metal terminal at the end of the wire. MUST touch that metal terminal.

[Metal terminal looks like this,

Left side shows what the jumper wire will touch. The ends are crimped around the insulation of the wire.
The right side shows the opening, and Front of the metal terminal connector. The tips can be seen in the Middle photo, of the above playtool link ]

The other leg of the U-shaped jumper wire, goes down into ANY socket hole, that has a Black wire in it.

There MAY be a spark when the jumper wire makes connection.
Cautioning you in advance. You may wish to wear a glove, on the hand for the jumper wire.

The contact time is no more than 2 seconds.
The Power On switch is a Momentary Contact Switch.

Power Supply comes on you have a bad Power On switch.
Power Supply does NOT come on you have a bad Power Supply.

This ATX power on switch fits a LOT of computers.

It will be located inside the plastic assembly, of the Power On Button. (IF it is the correct style. I'm guessing yes)

The Front Panel needs to be removed, in order to access the Power On switch,

Make note/s, and a drawing, as to where the Power On switch wires go.
Power On Button assembly removed, there may be a small screw, or screws to disassemble it; or just tabs formed from the plastic; of the Power On Button assembly.

I use a hair dryer to soften the aged plastic, and ease a tab, or two aside; to ease the Power On switch out.

Power Supply replacement procedures,

For additional questions please post in a Comment.

Posted on Nov 29, 2012


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SOURCE: pc power button doesn't work

Get a psu tester like this:

...and test the power supply to see if it's dead.

Posted on Jul 26, 2012

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