USB Ports I have an ACER 5100 and everytime I connect a USB device, the system does not recognize the USB device? How do I fix this? Please HELP!!!

based on the message, it is power related. the power needed by the card is greater which your laptop cannot supply. try to test an adapter with higher wattage and see if that helps

If you've recently installed updates, I would try rolling those back before uninstalling the USB devices in your device manager - but to do so, all you need to do is right click on 'Computer' in the start menu, and select 'Properties' from the menu that opens up. A new window will open up, and from there you select 'Device Manager' at the top right of the window. Once you've gotten into your device manager, expand the 'Universal Serial Bus Controllers' in the list by clicking the arrow to the left of it. You'll see a list of the devices that control, and are attached to your USB ports. Right click on each of them, and select 'Uninstall', then select 'Ok' to complete the process. Once you've done this to all of them, to ensure that your system is going to refresh and reinstall the drivers, be sure that you are connected to the internet, then click the 'Actions' tab at the top of the device manager window, and select 'scan for hardware changes'.

Hi, this might help you:

This is not so easy, and depends on how skilled you are in configuring pc's, but here i go:

go to Control panel> system>system properties> device manager

in this screen you can find information about stuff like what devices are recognized by your pc.

try and seek wether your ps2 devices are recognized an if so, if the system can control them to.

if not it might also be your usb ports or similar ports that aren't decently controled and por recognized by your pc, so make sure they work fien to by trying other devices on the same ports.

I hope this is useful, and greets.

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.

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.

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



I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

.There are a lot of virus' that will disable your USB ports. You can change the settings in the registry to enable them again.

Open registry (START > RUN> type regedit) and navigate to the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet \Services\UsbStor

Now in the right pane, double-click Start and type 3 in the Value data box (Hexadecimal) and quite the registry editor.

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/

Hi,
I hope i can help resolve your problem for you.
this may be a problem relating to your system device driver files.
Try This:-
go to My Computer/Control Panel/System/Hardware/Device Manager. at the bottom of the page you will see USB.
If you have any yellow symbols ( exclamation Marks ) then the driver has been corrupted, or installed incorrectly.
if you have a system restore disk. this may solve the problem for you. or recovery cd.
If you require further assistance, please ask.

Mike @ compurepair.

If Acer screwed up fixing your problem the first time (and it's evident that they did) they are obligated to fix it a second time, and if they cant, they are obligated to replace your laptop.