Question about Acer Aspire 5100 Notebook

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USB ports wont recognize anything I plug in

Two out of three usb ports will not recognize anything I plug in. I have an ACER Aspire 5100 laptop.

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  • steaveg
    steaveg May 11, 2010

    What happens when you plug in a USB device?

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  • Acer Master
  • 4,338 Answers

Are you using XP? If so:
Here is what you can do to refresh the USB ports:
1. Right click MY COMPUTER
2. Select PROPERTIES
3. Select HARDWARE
4. Select DEVICE MANAGER
5. Select UNIVERSAL SERIAL BUS CONTROLLERS
6. Right click on each USB CONTROLLER and select Uninstall
7. Uninstall all entries
8. Reboot your computer
9. As your computer re-boots it will reinstall all USB connections it detects
THEN, when all other USB items have been configured and connected by the system, you then should try connecting your USB device.


If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe

Posted on Jun 02, 2009

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1 Answer

My external mouse quit working on my Acer Aspire 5100 laptop.I have tried plugging it in to all the ports. It says USB device not recognized.


you might have to uninstall the mouse then restart your computer then reinstall the mouse and its drivers
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((if applicable))
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1 Answer

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Go to Control Panel, System, Hardware, and Device Manager. Look for serial ports/USB ports. Verify installed and active. If not, go to Bios 'setup' at start-up and activate from there. Be sure to save and exit even if you change nothing--otherwise everything returns to default.

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Is the keyboard on the laptop working? Also Does it recognize when you are plugging in the usb device? Go to your device manager and see if there are any exclamation points. Its possible a driver is corrupt or not installed.
Thanks,
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If none of your USB ports work, there could be a problem with your USB controllers. Uninstall the USB controllers via Control Panel - System ... and reboot your laptop. They will reinstall upon bootup. Good luck.

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1 Answer

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Are your Usb Ports listed in the Device Manager? If they are see if you can roll back the driver to an earlier date.

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Acer notebook usb not recognized


Sounds like a hardware issue. I would guess that there is a bad connection between the usb's and the motherboard. If you are comfortable dismanteling the laptop and re-soldering the usb's than give that a try, but I would recomend you give it to a pro.
Here is a link that explains the process. http://www.insidemylaptop.com/taking-apart-acer-aspire-5100-laptop/

Jan 17, 2009 | Acer Aspire 5100 Notebook

1 Answer

All USB ports not working


Sounds like a shorted out board. If you use a faulty device.. these can EASILY short out the USB controllers on the motherboard.

Alternative is to purchase a "PCMCIA USB expansion card" till you can replace the motherboard.

best wishes.

www.techvisitor.com

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1 Answer

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Download the Chipset drivers for your Acer model from their website and install them. This should fix the problem.

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