Question about Gigabyte GA-945GM-S2 (0818313003065) Motherboard

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Usb not working

The 2 USB ports on front of my computer are not working Absolute ... the PC with no OS at all so you've never seen the front USB ports function? ...

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  • amol gadhave Dec 05, 2007

    The 2 USB ports on front of my computer are not working Absolute ... the PC with no OS at all so you've never seen the front USB ports function? ...

  • sauls Feb 01, 2008

    I am using a USB hub running from the back of the computer. When I started using the hub, the front ports quit working...the hub works fine but now I need a working port.

  • Anonymous Feb 04, 2008

    usb is not working in front of my pc

  • kimmyh3 Feb 07, 2008

    none of the USB ports are working, they just stopped working when I was using it. I tried uninstalling them and rebooting but still nothing. I checked all the properties and it says they are all working fine. I even bought software that scans for problems in the computer and that didn't fix it either. I don't know what else to do?

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What about if the ones on the back of the computer do not work either? I know how the front ones are connected but not the ones on the back of the computer where the network and other stuff plugs in

Posted on Mar 04, 2008

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Hi FRND,
I hope you have the P4 machine with the front USB connections….
First you have to know the wire connection and voltage…
Four wires are their...
Red: + 5V / Voltage + / VCC
White: USB - / Data - / D -
Green: USB + / Data + / D +
Black: GND / Voltage - / Ground
Black: S-GND / Over Current

  1. Red
  2. white
  3. green
  4. black

It you still have confusion then look at the link…..
http://www.frontx.com/cpx108_2.html

Posted on Dec 06, 2007

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Front USB ports are an extension of a header on the mainboard, it connects via a bunch on individual pins, if any of these pins are wrong the front USB will not work, but usually this would lock up all USB and the ones on the back will not work either, i would suggest the front USB panel was either not connected at all, or it was conected wrong, usual USB header colors of wores is BLACK, GREEN, WHITE, RED, note all mainboards are different, so the black could start from either side of the header, b sure to refer to your motherboards manual for exact pin loactions on the header

Posted on Dec 06, 2007

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Posted on Jan 02, 2017

rasengan79
  • 138 Answers

SOURCE: usb not working

You said that the PC has no OS. Try installing an operating system first. USB ports will not work without an OS, unless accessed thru BIOS settings. Maybe the USB ports are working afterall.

Posted on Sep 17, 2009

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It is my pleasure to guide you.

A computer has USB ports on the back and on the front of most modern units. USB is what is called "usb hot swap". The pc can be on when the USB devices are plugged in or unplugged and the OS should recognize it. So if the pc hangs up there may be something else wrong.

1. Try unplugging all USB devices, boot the pc without any plugged in. Choose one device and plug it into each port. Wait until the OS recognizes the device. You will see a box come up with different options, one is at the bottom that allows you to open explorer. You can pick it or just hit the escape key to void the selection. (You do not need to reboot to try the rest of the USB Ports) Do this to all USB ports, both front and back. I know this will take time but you need to eliminate all the USB ports to make sure they are not the problem. Once you know that the USB ports are all good then the next step is

2. Now take each device and plug one at a time into any of the ports. I would use one on the front of the pc, makes it easier. Again let the OS see that it is there and prompt you for action.

3. If all your devices work after this testing, then plug everything back in and reboot the pc.

4. Have you made any changes in the BIOS? May be reset the BIOS lately?

This may sound like strange question but have you installed the OS to the USB device? Some Devices/OS's/PC's allow booting from USB devices. If the computer is trying to boot from USB it will cause terrible slow down in perfromance, check your "Boot Priority" Settings in the BIOS? The boot priority should list the HD Drive as the first boot drive.

Good luck and please post back that you are successful, giving thumbs up, or that I can be more help.

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If your USB ports are using VIA chipsets, sometimes you need to install the VIA USB drivers too.

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