Question about Asrock K7VT2 Motherboard

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I have two problems with my motherboard. 1. The power supply does not shut down when Windows has shut down. I have to switch it off at the mains. 2. The sound section of the motherboard does not seem to operate even after running Windows diagnostics, etc. In addition, it bleeps twice after starting to load Windows, having bleeped the usual once on boot-up. Cheers, Rob.

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You have to check for BIOS updates at the Asrock website. Sounds like BIOS issue

Posted on Jun 28, 2009

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  • Master
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Your pc have system error if you having this beeps. pls check bios setup.

Posted on Jun 28, 2009

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Gateway DX4822-01 power switch problems


The front of your computer is the Front Panel.

The area of contact pins on the motherboard, that the Main wires from the Front Panel go to, is the Front Panel header.

Main wires such as Power On LED, Power On switch, HarDDrive activity LED, and Reset switch; IF used.

Suggest KEEP track of where those wires go!

Make a drawing, and notes. I even use a magic marker, (Sharpee?), and make a notation of the Front Panel header pinout, on the floor of the computer case.

In this particular case it isn't known if the Power On switch is the problem, or the Power Supply.

Power On switch;
Power UNPLUGGED to computer, Anti-Static Precautions FOLLOWED; (Don't know? Post back in a Comment),

Remove the twisted pair of W/B and W/G wires, to the Power On switch pins, in the Front Panel header.

Plug power back into computer.
Use a small flat tipped screwdriver, and touch the two Power On switch pins. (Jewelers screwdriver works well for this application)

Power Supply comes on? Bad Power On switch.
Allow Windows to fully load, run for a few minutes; then turn the computer off normally.

Jump the two Power On switch pins again.
Power Supply comes on? You DEFINITELY have a bad Power On switch.

Power Supply does NOT come on?
We will go to a further diagnostic test then.
Awaiting results for first test, then we will go on.

Post back in a Comment.

Regards,
joecoolvette

[Also; is the computer dirty inside? ]

Feb 19, 2013 | Acer Computers & Internet

1 Answer

Start problem


All I see for the heading, romakavati, is - Fujitsu Barebone Systems.

Do I assume we are talking about a barebone Desktop Computer?

If so;

1) The plastic front of the desktop computer is the Front Panel.

The area of contact pins on the motherboard, that the wires from the Front panel go to, is the Front Panel header.

Do you have the wires from the Power On switch, connected CORRECTLY, to the Front Panel header?

(The Power On switch is located inside the plastic Power On button assembly. It is a style of ATX power on switch.

This is one example,

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

2) Your motherboard may require a 4-pin ATX +12 Volt power cable.
Example of cable,

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

This is power for the Processor.

If your motherboard does require it, do you have it plugged in?

3) Do you know if the Power Supply is good?

Even if it is a new one, and came with the barebones computer you bought, it doesn't mean it is a good one.

May be a bad one, and doesn't even turn on.
May be a bad one, and one of the three main voltage power rails, is no good.

[ There are three main voltage power rails, in the Switched-Mode Power Supply, installed for your Fujitsu desktop computer.

A) The 3.3 Volt power rail

B) The 5 Volt power rail

C) The 12 Volt power rail

All are DC Voltage.

{In comparison two D cell flashlight batteries store 3 Volts DC. Just a fact you may be interested in ]

First see if the Power Supply will turn on. This is done with a jumper wire, on the Soft Power On wire, in the ATX main power cable's connector.

Your ATX main power cable may be a 20-pin ATX main power cable, or a 24-pin ATX main power cable,

A) 20-pin ATX main power cable,

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

B) 24-pin ATX main power cable,

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

With both power cables you will see there is a Green wire.
This is the Soft Power On wire.
Abbreviated as PS_ON.

A jumper wire is used to briefly connect the Green wire, to ANY Black wire.
ALL Black wires are Ground wires.

DO NOT cut the wires, or poke a hole in their insulation.

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

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

U-shaped jumper wire turned upside down, you have two 'legs'.
The legs go down into the socket holes, of the ATX main power cable's connector.

Let's look at the example for the 24-pin ATX main power cable, again,

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

The 24-pin ATX main power cable needs to be plugged in, as shown in the photo to the far right.

Computer power supply is plugged into power.

One leg of the paper clip jumper wire, is inserted down into the socket hole, RIGHT NEXT TO the Green wire.

Goes down in the socket hole, slides past the insulation of the Green wire, and touches the metal terminal at the end of that wire.

The leg of the paper clip jumper wire, MUST go down in the socket hole far enough, to TOUCH that metal terminal end.

[ Metal terminal is a type of female Molex terminal. Tube shaped, and goes over a contact pin in the motherboard connector,

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

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

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

IF, the Power Supply comes on, you either have a bad Power On switch, or it is Not connected correctly, in the Front Panel header on the motherboard.

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

IF, due to lack of a more detailed statement from you, that your problem is the Power Supply DOES come on, but Windows does not load;

A) You know the Window operating system is NOT on a new harddrive, right?
You have to install Windows on it.

B) Installing a harddrive with Windows already on it.

You know that when Windows is installed on a computer, (To the harddrive, actually), it assigns hash values to certain major components, right?

Certain major hardware components such as;
1) Processor
2) Motherboard chipset
3) BIOS program, and version.
4) Harddrive
5) Graphics chipset

Change any two, or more of these components, and Windows will want to be activated again. (Not registered,... Activated)

This is because Windows will 'think', you are taking it off of the harddrive it is on, and trying to install it on another harddrive, or computer.

Microsoft User's License states; "One GENUINE copy of Windows per
ONE computer"

[ Microsoft makes one Master disk. From it all GENUINE copies are made, and sold to the consumer ]

However, the Windows activation screen does NOT always come up.

Ready for your questions, and additional information you did not post.
Post in a Comment.

Regards,
joecoolvette

May 20, 2012 | Fujitsu Computers & Internet

1 Answer

My motherboard is getting power from a 450w smps coz the board LED gets on when I switch on the ups. But pressing the power button on the cabinet does not switch on the system. Please help!!!!


From your diagnoses you may have a bad Power On switch, or a bad Power Supply.

Reasoning?

An ATX power on switch is connected to the motherboard's Front Panel header.
From there the circuit is continued through the ATX main power cable, and into the Power Supply.

The Power On switch connects the Soft Power On wire, to Ground.
(The Soft Power On wire is abbreviated as PS_ON. The wire is Green)


If the Power On switch is bad the Power Supply will not turn on.


A bad Power Supply will have a weak voltage power rail, (Or more than one)
Enough power to light LED lights, and perhaps spin fans, but not enough power to turn the Processor on.
No Processor operating, no computer.

1) If all of the LED lights were on at once, they would use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts.

3) A typical Processor can use from 51 to 125 Watts. Depends on what Processor it is.
(Older Intel Pentium III's, and comparative AMD processors used less than 51 Watts)

You may have enough power to light that LED light, but not enough to spin fans, or turn the Processor on.


There is a simple test to see if the problem is the Power On switch, or the Power Supply.
Bypass the Power On switch.

A jumper wire is used to temporarily connect the Soft Power On wire to ANY Ground wire.
The connection is made at the Back of the ATX main power cable's connector, with the ATX main power cable plugged into the motherboard, and computer plugged into power.

1) The Asus M2N-MX (And SE version) motherboard uses a 24-pin ATX main power cable.

http://www.asus.com/Motherboards/AMD_AM2/M2NMX_SE_Plus/

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

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

Looking at the photo to the far right, shows the 24-pin ATX main power cable plugged into the motherboard.
This is the position for the test.
(Computer also plugged into power)

The BACK of the connector is where the wires go into the connector.
The jumper wire is used on the Back side of the connector.

One end of the jumper wire goes down into the socket hole with the Green wire.
(Soft Power On wire)
The other end of the jumper wire goes down into ANY socket hole with a Black wire in it.
ALL Black wires are Ground wires.

The jumper wire goes down into the socket hole RIGHT NEXT TO the existing wire.
The jumper wire MUST go down into the socket hole far enough to touch a metal terminal.

At the end of every wire going down into the ATX main power cable's connector, is a metal terminal.
The metal terminal is pretty far down in the socket hole.

The preferred jumper wire used is a paper clip.
The paper clip's diameter is small enough, to go right next to the existing wire in the socket hole, and touch the metal terminal.

The paper clip is straightened out, then bent into a U-shape.
The 'legs' of the U-shape go down into the two socket holes.
The middle is wrapped with a few wraps of black plastic electrical tape.
The taped area is for your finger, and thumb to hold onto.

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

The connection made is no longer than 2 seconds.
(The Power On switch is a Momentary Contact Switch)

Computer comes on, (Power Supply actually) you know you have a bad Power On switch.
Computer does Not come on, you know you have a bad Power Supply.

For additional questions please post in a Comment.
Regards,
joecoolvette

Jul 10, 2011 | ASUS M2N-MX Motherboard

1 Answer

My pc starts normally, but after an hour or two when i click windows shut down windows closes, and no signal message is shown on monitor.But the CPU Fan, GPU Fan & Cabinet Fan running normally,they...


Hi,

There are two harware you should check,


First the memory, it might be malfunctioning, if you have an extra memry card, try to swap it just to test the syatem.


Second will be the power supply unit or PSU, that is already overheating and shutting itself down, thus its not powering the your hard disk. try to replace it if you have an extra PSU.


Those are the most probable problem you have, PSU is the main problem in any desktop that was always been overlooked!


Hope that helps you out!


Thanks for using Fixya!

Dec 16, 2010 | Intel DH55TC Motherboard

1 Answer

My dell dccy will not power on. It was working fine and was powered off but will not power back on. I have checked the power cord. I have opened the case and reseated all connectors. Pushing the power on...


Yes, it's called bypassing the Power On switch. Has nothing to do with the switch itself, or it's wires.

You use a jumper wire on the 20 or 24-pin ATX main power cable's connector.
Touch the jumper wire from the Green wire (Soft Power On) to ANY Black wire. (Ground)
(Soft Power On is abbreviated as PS_ON)

If the Power Supply comes on, the problem is the Power On switch.
If the Power Supply does Not come on, the problem is the Power Supply.

1) 20-pin ATX main power cable,

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

2) 24-pin ATX main power cable,

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

Look at the photos of the ATX main power cable plugged into the motherboard.
Where the wires go down into the connector is the Back of the connector.

This is where the jumper wire goes down into.

The jumper wire goes down into the socket hole, in the Back of the connector, RIGHT NEXT to the wire IN the socket hole.
The jumper wire has to go pretty far down in the socket hole.

[ATX power cable plugged into the motherboard, Power Supply plugged into power ]

At the end of every wire in the ATX main power cable's connector, is a metal terminal.

A Female Molex Crimp Terminal connector,

http://www.alibaba.com/product-gs/336134982/molex_female_crimp_terminal_connector/showimage.html

[You can click on the Zoom In icon { + } at the top to enlarge the view]

The jumper wire Must touch that metal terminal.
The jumper wire is made from a straightened out paper clip, bent into a U shape.
The middle of the U is wrapped a few times with Black plastic electrical tape.
This where your fingers hold onto the jumper wire.

(One wrap of Black plastic electrical tape is good for 600 Volts DC)

One 'leg' of the U shaped jumper wire goes down into the socket hole with a Green wire.
The other 'leg' of the U shaped jumper wire goes down into ANY socket hole with a Black wire.
(ALL Black wires are Ground wires)

The contact period made is no longer than 2 seconds.

The Voltage is 5 Volts DC.
Two flashlight batteries produce 3 Volts DC.

This is one generic ATX power on switch that I have found fits many computers,

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

NOTE*

WATCH IT when buying an aftermarket Power Supply for your computer, if it needs one.
For a time period Dell was strictly a Proprietary computer manufacturer.
Dell wanted THEIR parts used in THEIR computers only.

They had the motherboard manufacturer switch the pins around in the ATX main power cable connector, on the motherboard.
They also had the Power Supply manufacturer switch the power cables around in the Power Supply.

This means if you plug an ATX main power cable, from an aftermarket Power Supply, into one of these proprietary Dell motherboards, you WILL fry out the motherboard!

Can also fry out the Processor, Ram Memory, and Harddrive. (Plus a graphics card if you have one installed)

CHECK the color code of the aftermarket Power Supply's ATX main power cable, to the color code of the Dell power supply.

See that the color code of the wires matches the socket holes in the connector.

Have further questions regarding this, post in a Comment.

Regards,
joecoolvette

Nov 29, 2010 | Dell Computers & Internet

2 Answers

The on-off button will not turn the computer on. I shut it off last night using the "shut down" software sequence, clicking two sequential "shut down" icons and waiting for the machine to power off. What...


Yeah I have seen switches fail a few times, its rare though, trace the wire back to your motherboard and disconnect the lead, then short the pins. If it comes on replace the switch, if it doesnt reset the bios via a the jumper and try again, disconnect the long ATX cable from the mother board and all power connectors from peripheral devices and on the Long ATX connector that was connected to the motherboard you will see a green wire, connect your mains to the power supply and short the green wire on the ATX connector with the black wire next to it, the power supply should fire up, if it doesnt try a new power lead and outlet, if it still does not fire up its your powersupply. If however you power supply does power up you should reconnect everything and try your power switch and shorting power switch pins on motherboard again, if the power supply does not come on then yor motherboard should be replaced.

Jun 22, 2010 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

WINDOWS NOT SHUTTING DOWN COMPLETELY


dude i think its the BIOS prob try reseting the bios u can do so by removing the maotherboard battary for one min aand then replacing it this will surely rester the bios.this should it

Feb 03, 2010 | EliteGroup ECS 945GCT-M/1333 Motherboard -...

1 Answer

WINDOWS NOT SHUTTING DOWN COMPLETELY


Hi,
You will need to enable the Advance power management in Bios and on windows..
Try to see in the bios the advance setting for APM.
Some motherboard you have to enable this.
Other its simply on windows.
After the installation of windows
Go >Right click desktop>properties>then select screen saver tab>below click power>
Then click APM tab
enable and restart
May be this can solve this issues.
Or else I would advice to change the power supply and see.
Regards
uttam

Feb 03, 2010 | Computers & Internet

1 Answer

Power down


Windows does not shut down. Additional information and causes that may cause Windows 95 or Windows 98 to freeze, hang or lockup when attempting to shut down the computer.


How to restart or shutdown the computer in DOS. If you are currently in DOS and need to turn off the computer press the power button. Note: some newer computers may not allow the computer to be shut down ...


Installing a pc computer power supply Write down important information from the top or bottom of the power supply such as the Model Number, Serial Number and specifications (such as voltage...).


Basic floppy disk drive troubleshooting Power down, unplug, and open computer, being aware of ESD and its potential dangers. Verify that the floppy connection is connected to the motherboard FDD .

Good Luck, Read and follow instructions/Please dont for get to Vote/Thank You.

Dec 23, 2007 | Intel Motherboard

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