No sound from PC after disconnecting all internal cables.

So a V2 looks to be a mix match of parts. Most factory resets are done from a F key pre OS boot. When the pc starts up and you see the logo screen "splash screen" of the motherboard manufacture or Bios screen if thats disabled look to the bottom right hand corner. It should display to hit F10 F11 or F12 to go to restore.

A) With great tact and diplomacy;
Do not refer to a Personal Computer as a CPU.

CPU = Central Processing Unit.
Another term is Microprocessor, or simply Processor for short.
CPU = Processor

B) Because of the method you used to refer to the Computer, I do not know if you're talking about; the PROCESSOR did not start, or the Computer.

C) If I we are to believe this is a reference to the Computer;

1) Check the Power Supply voltages,
OR
2) Substitute the Power Supply; with a KNOWN to be working, Compatible power supply, for a temporary test unit.

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

B) EACH fan uses 2 to 3 Watts of power.

C) A typical Processor can use 51 to 125 Watts of power.
Just depends on what Processor it is.

A Power Supply with a weak voltage power rail, will not have enough power to turn the Processor on.

However I am still confused by the statements;
1) "CPU did not run"

Does this mean the COMPUTER did NOT turn on, which implies the Power Supply did not turn on;

OR,

Does this mean LED lights came on, fans may be spinning, but Windows does not load?

2) "I can't find any signal on my Computer........"
Signal = Voltage.

To see if there were voltages going through the motherboard, you wouldn't be posting on here. You would know how to take a multimeter, and test them.

Means to me you see No Signal on the monitor.

D) Are you FOLLOWING Anti-Static Procedures?

E) Power Supply voltages prove to be good, or you are using a KNOWN to be good, Compatible power supply?

Disconnect EVERYTHING from the motherboard.

NO cables to the motherboard, EXCEPT the 24-pin ATX main power cable,

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

[NOTE* Color of connector does NOT matter ]

,and the 4-pin ATX +12 Volt power cable,

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

Disconnect the data cable AT THE motherboard, for the Harddrive, and optical drive/s. (CD/DVD drive)
Disconnect the power cables to them also.

Disconnect ANY USB front panel cables.

LEAVE processor fan wire connected to motherboard.

You want the Processor, finned Heatsink sitting on it, and the Processor fan.
ONE stick of Ram Memory in Slot 1. (DIMM 1)

Leave graphics card in, IF used; or monitor is connected to the VGA port on the motherboard. (D-Sub connector)

Turn the Power Supply on.
You should be able to bring the BIOS Setup screen up.

If no, consider the motherboard to be bad.

http://www.msi.com/product/mb/G31M3-L-V2---G31M3-LS-V2.html

http://www.newegg.com/Product/Product.aspx?Item=N82E16813130217

Post back in a Comment, as to the information I need.
CPU = Processor
PC = Computer, or just use Computer.

Regards,
joecoolvette

Ne parlez vous Espanol.

http://www.ecs.com.tw/ECSWebSite/Product/Product_Detail.aspx?DetailID=60&CategoryID=1&MenuID=24&LanID=0

Scroll down, click on Download.
(Specification / Download / Certification / FAQ / Pinout )

Click on Manual
(Driver / BIOS / Manual)

Click on country NAME nearest yours,

Taiwan / USA / Europe / China

Make SURE there is a Green dot in the small circle to the left of -
Save File.
If not; click in the empty circle to the left of Save File.
Go below in the window, and click on OK.

Another small window will come up on the Left.
Allow the file to fully download, then DOUBLE-click right on the file name.

In the next window go to the far left/top, and click on -
Extract all files.
At the bottom of the next 3 small windows, click on -
Next, Next, and Finish.

In the last window DOUBLE-click on the file name.
(Next to the red Adobe PDF icon)

There is your Motherboard Manual, and conectados los cables.

For additional questions please post in a Comment. (English, please)

Regards,
joecoolvette

go to the web site download drivers from there jim esc.com

Once you press the Power button to turn On the machine, keep tapping the F8 key on the keyboard, you'll be taken to the "Advanced Boot Options" menu.

If you need further help, let me know

Good luck.

Thanks for using FixYa.

If both motherboards are LGA775 socket, then the next concern is whether or not the case is capable of having the new motherboard installed into it. Disconnect all power cables to all dv drives or cd drives and hard drives. Disconnect all ribbons from drives to the mother board. If you can get to all of the screws that hold the motherboard into the case, you get away without removing drives. Once you've got the motherboard then you can disconnect the power cable from the motherboard. Remove the memory chips, disconnect the sound cable from the old motherboard. install the memory chips onto the new mobo, Connect the power cable to the new mobo, then install the new mobo into the case. Replace the ribbons from the drives to the mobo, replace the power cables to the drives and reinstall the sound cable to the cd or dv drive. You should be done now.

Make sure the driver is functioning. Just because it's installed doesn't mean it's working. Pull up the device manager and make sure there are no yellow or red symbols.

Also, be sure that the "mute all" isn't enabled via the volume control.

You can install a new motherboard in your desktop case. The mounting holes and screws are standard and you need only move the screws to locations on the base to match the motherboard mounting holes.

Disconnect the Power cable / A/c adapter/Battery from computer.
Disconnect External peripherials.
Hold down the power button on the computer for 10 seconds.
Reconnect the power cable or A/c adapter and battery or the computer
Try to turn on the computer
check for Led's on the computer
If still no display ,shut down the computer,disconnect power cable.
Open the computer tower,remove memory modules,reconnect power cable and turn on the computer.If you get a beeping sound after turning on you should be getting beeping sound suggesting the mother board is not bad.Turn on the computer and disconnect power cable from computer.
Reseat 1 memory at a time if you have 2 memory module or if single memory module reseat in different memory slot,swap memory module.
Reconnect the power cable and turn on the computer if it boots to desktop possible issue with 1 of the memory module.
Disconnect the harddrive ide cable from the harddrive .Turn on the computer.
If still unable to power on .Shutdown the computer and disconnect power cable.Remove video card,sound card ,modem card if any .Connect just the vga cable from monitor to the integrated video port.
Connect power cable and turn on the computer.
If computer turns on possible issue with one of PCI or PCI express card.
If still unable to power on.Disconnect the power connector pin from the motherboard and reconnect it back.Turn on the computer check power power led on motherboard,also check if the processor fan is spinning. if no go then issue with motherboard. GOOD Luck.!!

is jumpers on corect cant u just use ide cable instaed u said your going from ide to sata cable ?