Question about Biostar TForce6100-939 Motherboard

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The ATX power supply on my computer went out, so I replaced it with a new one. I connected all the usb and cables in the back, plugged in the power cord and turned on the switch and the mother board powers up. Then I push the bottun in the front of the computer and the 4 red lights on the mother board come on and everything seems to be up and running, but I don't think the usb ports nor the monitor is functioning properly. The monitor is getting it's own power, but no signal from the motherboard. What am I missing?

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  • Cherienel Arango May 11, 2010

    Did you hear some beeps, and how many...?

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Try refreshing all connections to the motherboard. Also clean the RAM as shown in the image below.The ATX power supply on my computer went out, so I - cfaa97e.jpg
Resetting the CMOS may also help you in the process. Make sure that the power cable connected to the power supply is disconnected. Change the jumper settings of JCMOS1 (labled 1) from 1-2 to 2-3 for approximately 10secs. (refer to the image below).
28e4225.jpg
Then return to original settings (1-2). Hope this helps.

Posted on Oct 07, 2009

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Check you memory modules.

Posted on Oct 07, 2009

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SOURCE: Motherboard not functioning

If the power supply had a problem then it is likely that the motherboard and/or the CPU got damage from that. I would check the 12V and the 3.3V lines from the PSU.

Without more information I cannot say specifically what the problem is. You can try disconnecting everything from the motherboard except video card, CPU, and RAM to see if it would work that way. If it does then you can start connecting devices until it does not work any more then you have found the problem. If that does not work at all then unplug the video card and RAM see if anything changes (you should get a beep code without the video or RAM). If nothing changes then either the CPU or motherboard is bad and the only way that I know of to find out which one is to either try the CPU in another motherboard or try a different CPU in that motherboard.

Posted on Nov 13, 2007

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1 Answer

REPLACED POWER SUPPLY AND MOTHER BROAD AND STILL CANT GET IT TOO POWER UP


I need you to check something first.
I'm going to get detailed here to explain;

1) The Dell Dimension 1100 (B110) uses a 20-pin ATX main power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

The above is a STANDARD pinout for the wires going into a 20-pin ATX main power cable's connector.

For a time period Dell had parts made for their computers, that were PROPRIETARY.
(All pre-built computer manufacturers have their computer parts made by somebody else)

They were Proprietary, in that the STANDARD guidelines for desktop computers was NOT followed.
They had the wires changed around for the 20-pin ATX main power cable.

They also had the pins in the 20-pin ATX main power connector, on the motherboard, changed also.
Means if you plug in an aftermarket Power Supply, it may toast the motherboard, Processor, Ram Memory, Harddrive, graphics card, (IF used), and so on.

Fun stuff huh?
Dell changed from being Proprietary as far as I know.

However you computer may fall into the old proprietary parts.
You need to compare the 20-pin ATX main power cable's connector, of the old Power Supply, TO the new Power Supply's 20-pin ATX main power cable connector.

SEE if those wires (Color code) are going into the same socket holes, as the old one.
Look at the Lock on the side, and use it for the key.

In the Standard 20-pin ATX main power cable's connector, Number 1 pin is the Orange wire, and on the side OPPOSITE of the Lock.
Number 11 wire is also Orange, but is on the same side as the Lock.

Now you have the key, check out the old Power Supply's 20-pin ATX main power cable's connector.
Same color of wires going into the proper socket holes in the main power cable's connector?

Whew! Good! Let's go on.

You need to get the Power Supply going.

Bypass the Power On switch.

IF, you bypass the Power On switch, and the Power Supply comes on, you have a bad $5 Power On switch.

IF you bypass the Power On switch, and the Power Supply does NOT come on, you have a bad Power Supply.

Test has NOTHING to do directly with the Power On switch, or it's wires.
A jumper wire is used on the Soft Power On pin, TO ANY Black wire, in the 20-pin ATX main power cable's connector,

Looking back at the 20-pin ATX main power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

The GREEN wire is the Soft Power On wire.
A-N-Y Black wire you see is a Ground wire.

(The power wires are Positive wires. ALL Black wires are Negative wires )

The preferred jumper wire is a paper clip.
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-shape upside down, and the 'Legs' are what you are going to use.
One leg goes down into a socket hole with the Green wire.
The other leg goes down into ANY socket hole that has a Black wire in it.

The 'Leg' of the jumper wire goes RIGHT NEXT TO the existing wire in the socket hole.
Where the wires go down into the connector of the 20-pin ATX main power cable, is the BACK.
The 20-pin ATX main power cable is plugged into the motherboard, as shown in the photo to the far right, in the Playtool link.

The jumper wire goes down into the Back of the connector, and into the two socket holes named above.
The jumper wire MUST go far enough down into the socket hole of the connector, to go PAST the insulation of the wire, AND touch the metal terminal at the end of the wire.

All wires going into the main power cable's connector, end in a metal terminal,

http://www.molex.com/molex/products/datasheet.jsp?part=active/0002081202_CRIMP_TERMINALS.xml&channel=Products&Lang=en-US

The left side is the Back, and the part that get's crimped on the insulation of the wire. The right side is the Front.
The Front of those Molex metal terminals can be seen in the center photo, of the Playtool link.

Contact made is no more than 2 seconds.
(The Power On switch is A Momentary Contact Switch)

Get the Power Supply going, then post back in a Comment, as to the results.

(Also make SURE the 4-pin ATX +12 Volt power cable is plugged in,

http://www.playtool.com/pages/psuconnectors/connectors.html#atx12v4

This is power for the Processor, and sometimes forgotten. NO, it has nothing to do with why the Power Supply does not come on. Just wanted to add.

This is where it plugs into the motherboard,

http://support.dell.com/support/edocs/systems/dim1100/EN/SM/techov.htm#wp1061217

Processor and heatsink connector (J2E1) is where the Processor sits.
Processor power connector (J5B1) is where the 4-pin ATX +12 Volt power cable plugs in )

May I also ask why a new Power Supply was purchased, and a new motherboard?
Post back in a Comment.

Regards,
joecoolvette

Sep 19, 2012 | Dell Dimension 1100 PC Desktop

1 Answer

The local electricity supply went off and when power was restored the computer would not come back on again. What has happened?


Could have been a voltage spike. When the utility company turns the juice back on, there is a rush of power. This is needed to meet the power demands for all the users, who are on the line.

Problem is the voltage may be higher than what is needed, and a spike may occur. (Spike: Temporary voltage increase )

No sir. The utility company is not held responsible. (Yes, that bites!)

I have found that around 80 percent of the time, the problem is a bad Power On switch, or a bad Power Supply, when this occurs.

{The rest of the time the power went further than the Power Supply, and burned out the motherboard, Processor, Ram Memory, etc}

Power Supplies used in desktop computers, are generally a generic low quality unit.
Low quality Electrolytic Capacitors, Rectifier Bridge, MOSFET's, small gauge wiring, etc.

Couple that with some age on the Power Supply, and it doesn't take much to put it in an 'early grave'. (Plus being dirty inside)

I suggest you test to see if the problem is a $5 ATX power on switch, or the Power Supply.
I can only give you generic information, as the computer manufacturer name, and model number were not given.

(It's on the back of the computer tower next to the Windows product key, or up on the side/top of the tower, or behind a hinged panel in the front of the computer )

The test is to use a jumper wire, and bypass the Power On switch.
This has Nothing to do with the switch itself, however.

The main power cable coming from the Power Supply, and plugging into the motherboard, is either a 20-pin ATX main power cable, or a 24-pin ATX main power cable.
(Unless the desktop computer is Real old)

1) Basic example of a 20-pin ATX main power cable, and it's respective connector on the motherboard,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

{NOTE* Color of connectors does Not matter }

2) Basic example of a 24-pin ATX power cable, and it's respective connector on the motherboard,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

(Same thing about color)

Here's the way it works when you press the Power On button, and the computer is plugged into power;

The Power Supply, when plugged into power, has a constant 5 Volt standby power present. (DC)

Pressing the Momentary Contact Switch of a Power On switch, momentarily routes the 5 volt power present in the Power Supply, back to another circuit in the Power Supply.

The Soft Power On circuit.
This small voltage 'excites' the Power Supply, and turns it on.
(No pun intended)

As stated, the Standby power is 5 Volts.
It is 5 Volts DC. In comparison two D cell flashlight batteries store 3 Volts DC.
Stated in case you are worried about electrical shock.

(The Power Supply in your computer is a SMPS.
Switched-Mode Power Supply.

It converts the AC power from your home, or business, into three main low DC voltages.
3.3 Volts, 5 Volts, and 12 Volts.

No matter if your country uses 100 Volts AC, or 120 Volts AC, or 220 Volts AC )

Look at either ATX main power cable. Note in the photo to the far right, the power cable is shown plugged into the motherboard. This is how it should be for the test.

Note also that the wires go in the BACK of the connector, and there is one Green wire.
This is the Soft Power On wire. (Can be abbreviated as PS_ON)

ALL of the Black wires you see are Ground wires.

The preferred jumper wire is a paper clip. It is straightened out, then bent into a U-shape.

The U is wrapped a few times, with black plastic electrical tape
for your fingers, and thumb to hold onto.

The 'legs' go down into the socket holes, in the BACK of the ATX power cable's connector.

The jumper 'legs' go down in the socket holes, RIGHT NEXT TO the existing wires already in the socket holes.

Right next to the GREEN wire, and ANY Black wire.

At the end of every wire going down into the back of the connector, (ATX main power cable connector) is a metal terminal.

This metal terminal is pretty far down in the socket hole. (1/2 inch?)
The jumper wire MUST touch the metal terminals.

The contact made is temporary. No longer than 2 seconds.
(Power Supply plugged into power)

IF, the Power Supply comes on, you have a bad Power On switch.

IF, the Power Supply does Not come on, you have a bad Power Supply.

The Power On switch, is located inside the plastic Power On button assembly.
It is an ATX Power On switch.

This is one example,

http://www.directron.com/atxswitch.html

The plastic of the Power On button assembly gets hard over time, and with constant heat from the computer.
The best method I have found, is to remove the Front Panel, and the Power On button assembly.

[ NOTE* Make notes as to which pins on the motherboard, in the Front panel header, the wires of the Power On switch go to.

I may Not have access to the Front Panel header pinout, to tell you where those wires went.

{The plastic front of your desktop computer is the Front Panel.
The area of pins on the motherboard, that the wires from the Front Panel go to, is the Front Panel header ]

I then use a hairdryer, or a bowl of very warm water, to soften the plastic.
(The ATX power on switch inside is going to be thrown away. Doesn't matter if it gets wet )

Then carefully ease the case of the Power On button assembly out, and ease the ATX power on switch out.

There MAY be a spark as you connect the jumper wire. Letting you know in advance. The tape is to protect your fingers.
You may feel safer using a glove on that hand.

The voltage however, is 5 Volts DC. As previously stated two D cell flashlight batteries store 3 Volts DC.

Would appreciate it if you would post back in a Comment, as to your findings.
With the computer manufacturer name, and model number, I may be able to show you direct information.

I can also help you decide on a Power Supply to buy, should it be the problem.

Regards,
joecoolvette

Feb 11, 2012 | Computers & Internet

1 Answer

I recently purchased a new atx 1956f power supply. When it was installed in my computer the green light in the back came on like it was supposed to, but when I pushed the computer power on button the power...


Hi, check your power supplier fan is work or not. if it is then watch mother board light is on or not. If it is then try to connect correctly power cable into the port.

Thanks.

May 13, 2011 | Computers & Internet

2 Answers

No power when I switch on computer. Fan not running, power light not coming on. Have tried plugging in to different socket. Still nothing. Taken case side off, double checked all fittings. Cleaned computer...


If you know the receptacles that you have plugged the computer into, indeed have power, I would suggest you diagnose the Power On switch, and the Power Supply.

See of the problem is the Power On switch, or the Power Supply.

A jumper wire is used on the main ATX power cable.

1) If the Power Supply comes on you have a bad Power On switch.
2) If the Power Supply does Not come on, you have a bad Power Supply.

Your problem is posted in the eMachines Bestec ATX-300-12E power supply section.
Going with that we are discussing a Bestec ATX 300 watt power supply, the main ATX power cable is a 20-pin ATX main power cable.

Typical pinout of a 20-pin ATX main power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

Note the Green wire in the BACK of the connector, in the photo to the far right.
This is the Soft Power On wire, or also abbreviated as the PS_ON wire.

Note the Black wires. ANY Black wire is a Ground wire.

With the 20-pin ATX power cable plugged into the motherboard, as shown in the photo, a jumper wire is touched to the Green wire, and to ANY Black wire.
The computer (Power Supply) is also plugged into power.

Generally a paper clip is used for the jumper wire.
The paper clip is straightened out, then bent into a U shape.
Black plastic electrical tape is then wound around the middle of the U shape.
This taped area is for your fingers, and thumb to hold onto.

The 'legs' of the paper clip, are then inserted down into the socket holes, in the back of the 20-pin ATX main power cable's connector.

Down into a socket hole with the Green wire, and also into a socket hole with ANY Black wire.
The 'leg' of the paper clip goes down into the socket hole, RIGHT NEXT to the existing wire.

At the end of every wire in the 20-pin ATX main power cable, is a metal terminal end.
The metal terminal end is pretty far down in the socket.
You must ensure that the metal end of the paper clip, touches the metal terminal.

The voltage is 5 Volts DC.
Two D cell flashlight batteries produce 3 Volts DC.
There may be a small spark as you make the connection.

Warning you in advance.
You can see the voltage is VERY low, however.

I would like you to perform this test, then post back in a Comment as to your findings.

Regards,
joecoolvette

Apr 03, 2011 | E-Machines Bestec ATX-300-12E Rev. D 300w...

5 Answers

There is no power switch on the enhance atx 1123b that I have . What actually powers it up?


Just about every power supply I've owned doesn't have a power switch. The power supply is turned on by one of the wires in the 24 pin connector. According to this it looks to be pin 16 and how to turn it on:

"Short this pin to GND to switch power supply ON, disconnect from GND to switch OFF."

Hope this helps

Ray

Mar 01, 2011 | Enhance Technology ATX-1123B, Enhance...

1 Answer

Computer went of


if your computer is went off first you check its power cable .its battery if working in good then you check its power button its properly working push properly
if you have desktop computer check its power supply open its atx power connecter 24/pin in pin you green or black short it if supply fan on its mean your supply is oky
have a problem of mainboard supply regulater
its check with meter
first you replace power supply then check motherboard

Dec 27, 2010 | Computers & Internet

1 Answer

Bestec atx 250 12z Power Supply - Community power went off today - machine was on when power went off, but now will not turn back on. Now Green light is flashing on back of power supply. Light...


Outages are frequenly accompanied by power surges. It sounds like your power supply got cooked and does not produce enough power to start your computer anymore.

They are inexpensive and are easily replaced. Take a couple of digital pictures of it in your case and then remove it.
Measure the dimensions and go find an ATX power supply that will fit. I recommend that you go up to at least 350 watts. Use your pictures to help you install the new power supply.

If this helps please vote for my solution.

Sep 21, 2010 | Computers & Internet

1 Answer

Hp pavilion a430n power supply is blinking


Look at this photo
(http://www.atxpowersupplies.com/images/300-watt-atx-power-supply-FSP-ATX-300GU-350w.gif)

Did you connect the p4 atx 12vx1 plug?
You may also need to connect the aux x1 plug on some models.

Mar 08, 2010 | HP Pavilion a430n PC Desktop

2 Answers

Hpw do you replace the power source on a gateway MFATXPNT ESX 500S.


How do you know the power supply is the problem?
What issues are you experiencing?
Have you done any trouble shooting first? It could be a bad hard drive.

If you should need to replace the power supply first you need to get a replacement power supply for a gateway MFATXPNT ESX 500S - 300 watt power supply you can get here.

The next step is to unplug the computer from the wall > remove the case side access panel > ground yourself with an Anti-Static wrist strap cord so you don't fry *********** board electronics from static electricity discharge which can cost you a lot more to replace > now disconnect the plugs from the power supply wire harness, it may help to count the connections and mark them with a piece of tape or draw a diagram so you don't forget which loose cables should get reconnected to the new power supply. There will be at least one that connects directly to a plug on the mother board, DO NOT put tape there. > Next remove the screws which mount mount the power supply to the metal frame and slide out the power supply > slide the new power supply in the same way the other other was removed (note top from bottom) and then screw back to frame and reattach the cables > close the case > remove your grounded wrist band > plug computer back into wall and start the computer.

Congratulations, you have just replaced your power supply and ready to go.

IMPORTANT: Do not switch the power output selector switch on the power supply. Usually a recessed re switch which will adjust for european vs. US power input conversion.

Additional Resources and Tutorials
Step by Step Video Tutorial to Replace Power Supply
With pictures, step by step
Diagnosing ATX Power Supply Failure with Diagram
How to diagnose and replace a failed pc power supply

Hope you find my resources and information useful and rank or review it accordingly.

Jan 12, 2010 | Gateway GT5220 PC Desktop

2 Answers

System won't turn on but when i pushg down on one side of the power suply connectore the fan starts running but computer stioll won't turn on it used to boot up then opne day stopped


It sounds like you have a faulty connector - I would return the item under warranty. Otherwise, if it is out of warranty, you will have to source a new motherboard.

Nov 23, 2009 | ASUS COMPUTER INTL P5SD2-VM MBD MATX LGA...

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