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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Re: usb not working

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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Re: usb not working

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…..

Posted on Dec 06, 2007

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Re: usb not working

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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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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My usb ports do not work. Memory stick works on other computers but not my desktop. Help!

Do any other devices work on any of your USB ports on the desktops? Does the memory stick work with a port that works for another device?

If all of the ports fail, check the Device Manager (for Windows OS) - you may have a driver issue. This is reached through the Control Panel (under Hardware or System). The exact titles will depend on the version of the OS.

When you scroll through the list to the USB controllers, look for a triangle with a red x or a yellow triangle. The right click (or double-left click) and try to update your driver or roll back the driver to an older version that worked.

If only a few ports fail, then are you dealing with the front ports or the rear ports? If the front ports (case), then you might want to check if the header cable is fully connected to both the case and the motherboard. This requires opening the case with the appropriate care.

Unfortunately, some new USB devices pull too much power through the port and can burn them out. (Those that charge on the computer are the most likely culprit.) If you have a few working ports, get a USB hub that is self-powered. (Get a good one or only use the AC adapter when there are more than 4 devices connected to the hub.)

I hope this helps.

Cindy Wells

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I have loaded USB 2.0 Driver but System could not detect that USB 2.0 Port when I connect USB 2.0 device to all six USB Port. I am having DG31PR Motherboard. I checked in BIOS setup. High speed port enable...

You have not mention what Operating system is on your PC.

For Windows OS XP, you just have to install at least XP Service Pack 2 or higher... and the USB 2.0 ports will function. For Vista & Win 7 OS, the USB 2.0 drivers is in the Operating System when you install Windows.

Hope it helps.

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My USB ports won't work on my gigabyte MA69VM-S2 mobo with win7

Unlikely to be issues with the OS. Have you recently upgraded to Win 7 from Vista or XP? and did the USB ports work with this OS?
Do ALL usb ports fail or is it just one or two and are these the front USB's or rear USBs?

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Ecs gf 8200a usb ports dont work, running vista 64

Could be a bum board or specifically, bum usb controller on the board. Make sure you update your BIOS, and make sure the BIOS says the front USB is activated. You also want to make CERTAIN you have the USB drivers from the motherboard mfr site, because windows native drivers might not be as good as mfr drivers. Also, put a flash drive in the front USB and try to boot from it (youd prolly have to get some linux bootable OS thing to do that with, but im sure its out there somewhere), because if you can boot from a flash drive, it would mean the issue is in the windows OS, and not your bios or usb firmware. Finally, make sure there are no broken USB ports on the board itself, a messed up port on the board might corrupt the rest of them. If all that should fail, you could bypass the problem by dropping an external USB hub on the top of the machine and plugging it to the back. I know thats ugly and causes clutter, but it would solve the immediate issue: the lack of ports. Youd likely be better off with another board though because it seems that the front usb controller is simply not functioning correctly. If you do have to replace the board, get a board from the same mfr with similar features, so that windows vista will be able to start it, or you may have ro reload the OS.

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2 Answers

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Check that all the USB ports are turned on in the BIOS setup.

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For any computer there will be at least 4 usb ports. 2 at the front and other 2 at the back side of cpu. If any one is not recognizing then insert it in different usb port. If any of the port is not working then install the driver for your usb port. Download the usb driver from the below link.

Thank you......

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4 Answers

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As you stated the device works in one slot but not the other , tells you there is problem with that usb port , don't use those ports , best thing to do is purchase a PCI USB card if you need more USB ports .

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Check in and see if there is a firmware upgrade for that particular motherboard.

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On some computers the front usb ports are like a usb hub, they don't have enough power to power up a hard drive.

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