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Usb ports dont work good. Sometimes they work and sometimes they wont.

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  • basdej Jul 03, 2009

    still doesnt work. Seems there is no power on some of the usb ports

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Make sure you have driver CD in hand ...

1. right click on my computer
2. select properties.
3. click on HARDWARE tab at the top.
4. Select "device manager " from drop down menu.
5. Click on UNIVERSAL SERIAL BUS CONTROLLERS.
6. Uninstall and reinstall the drivers using your CD.
7. Restart your PC And it should work.

Posted on Jul 03, 2009

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Have you tried plugging this into a USB2.0 port ? sometimes, some of the usb ports dont not have enough power to charge some players.

Which is which is why, sometimes, (seen very often with external hard drivers) there are two usb plugs on the computer side which needs to be connected.


1) Try another USB port, or another computer (especially is this is a laptop, some of the ports are under powered, to save power)

2) if you have an AC Adaptor to charge this, try it with that

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My Acer KU 0760 keyboard is not working at all. Seem as if the computer doesn't recognize it at all. The mouse works in the USB ports, but nothing from the keyboard. Had old gatway keyboard laying...


Try the keyboard in the USB port you've been using for your mouse. Just move your mouse to a different USB port. I know, this seems like a "too simple" solution, but USB ports sometime get cranky.
A question I would have would be: have you been using a PS2-type keyboard prior to trying to use the Acer USB one? Sometimes the BIOS needs the item "use USB port for keyboard" turned on.
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Problem with usb port don`t work


Step 1
Before you start working on the USB port, make sure that your device is not the problem. If the computer says that the there is a new USB device but that it cannot use it, typically there is a problem with the device's driver and not the USB port. If this is the case, your best option is to re-install or upgrade the device driver. Try inserting the device to another computer. If the device works, most likely the problem is with the computer and not your device.

Step 2
Try rebooting the machine. Rebooting a computer resets all of the software to the default state and will clean up many issues. The start up process also checks all of the devices on the computer and can sometimes fix a USB port. First shut down the machine. Connect the USB device up to the computer and start it. This reboot will sometimes fix a bad USB port.

Step 3
Try attaching the USB device on to another USB port on the same computer. If the device now works, the old USB port probably has a hardware or BIOS issue. Skip to step 5 to try to fix a bad USB port through the BIOS. Fixing a hardware problem on a USB port requires working on the motherboard which is typically more expensive just adding a new USB ports.

Step 4
Uninstall your computer's USB device bus manager. The device manager controls the USB access and sometimes gets corrupted. Fixing the USB device manager requires administrator rights on the machine. The best way to uninstall the device bus manager is to right click on your computer's icon and select properties. This will bring up the hardware settings for your machine. Click on the hardware tab and select the device manager. The device manager lists all of the devices on the computer. The next step is to open up the "Universal bus controller" option. Right click on all of the items under this option and uninstall them. Once all of the devices have been removed, restart the machine with the USB device connected. Upon reboot, windows re-installs the USB device manager. Most of the time, this will fix the USB port.

Step 5
The next thing to try is to check the BIOS. Restart the machine and enter the BIOS setup screen. You should check to make sure all of the USB ports are active. If they are, you should try resetting the BIOS settings to the defaults. The BIOS reset will sometimes fix USB port. But if it does not you will have to consider upgrading the BIOS. Upgrading a computer BIOS is very dependent on the motherboard manufacturer and you will have to visit your computer manufacturer's web site for detailed instructions.

Step 6
The last trick to try to fix a USB port is to repair your OS. Sometimes the USB drivers can get corrupted and break the USB ports. You can reinstall the system files onto the computer which should fix the USB port. Your data files should not be changed in this process, but it is a good idea to do a full backup of the computer ahead of time. In windows, an OS re-install is done by loading up the windows installation CD/DVD and selecting the repair windows installation. Just follow the steps and you often have a fixed USB port at the end of the process.

Please rate me if this solution works for you

Thanks......Have a great time.

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this is usually do to a port going out or the total failure of the mouse.. or if it's a rather old mouse, the ball underneath is too worn to work.

if it's the port, there are 2 kinds, one is a round port (PS/2), you will have to turn off the computer to remove the mouse from this type of port.

if it id the round ps/2 port, you will have to either get a new mouse using usb, or you can try a new ps/2 based mouse. 

REMEMBER you cannot plug in or remove a ps/2 mouse while the computer is still on!

The next port, and most common is the usb port. it's a small rectangle.

You most likely have atleast 4 of these on the back of your computer, and most of the newer computers have 2 on the front, sometimes in a hidden panel.

Sometimes if you are a windows user, windows will set a usb port aside for what normally resides there, and a mouse in a port that usally houses a printer usb plug will make windows not see the mouse sometimes.

Removing a usb port mouse is rather easy, you dont need to turn the computer off to do so.

Before considering replacing a usb mouse, try putting it into another usb port. sometimes this will work. also, see if the lights are working underneath when plugged in. (optic mouse, not ball mouse). 

if you have determined that your mouse is broken, then the next step is to replace it. bestbuy sells mice for about 25-30 dollars.

if you dont mind waiting 3-7 business days, a reputable online retailer like 3btech.net can sell you a mouse for about 15-20 dollars, and 3btech does not charge for shipping.

usb mice can be found here:
http://3btech.net/keyboardsmice1-us.html

ps/2 mice can be found here:
http://3btech.net/keyboardsmice1-ps.html 

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