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Usb My usb has power but will not reconize anything I plug in

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W 7 First, please disconnect all USB devices and then perform the following steps:

Click "Start" button, type "devmgmt.msc" (without quotation marks) in the "Search" bar and press "Enter". Click "Continue" if necessary.

In Device Manager, double click to expand "Universal Serial Bus controllers", right click on the Host Controller, click "Uninstall" and click "OK".

Repeat the step 2 to uninstall all items under "Universal Serial Bus controllers".


Then, restart your computer and Windows 7 will reinstall all USB controllers automatically. for XP or earlier click start right click on computer select properties device manager scroll down universal serial bus controllers you could see a yellow question / exclamation mark? ! or a red X you will need to update/reinstall drivers right click to reinstall drivers if you can see your usb drive but its not working ports (com&lpt) right click update driver if this fails to fix the problem Check the USB leads that attach to the motherboard usually red white green black make sure they are securely seated and have no dust build up on them dust will cause static and a lot of unforeseen problems to a computer and its parts if you need more help with this or if i have missed the problem post a reply Hope it helps.

Posted on Jan 06, 2013

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1 Answer

My usb won't work or reconize anything I plug in


Try out MS Fixit. Use IE (Chrome did not filter correctly). Select Windows. Use USB as the filter. There should be 2 executables, and maybe some other solution. This a fairly new and dynamic site, so a little feed back would be great. http://support.microsoft.com/fixit/

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On your sansa, go to "Settings" then System Settings" then "USB Mode," then change it to MSC, if that does not work, try the other modes, just n case.
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Have 4 USB ports on my compaq R4000 lap top, and only 2 work...


its better that u dont use other 2 usb an use just 2 that works.but try this.
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1 Answer

I can't get my Compac Evo N610 to reconize my docking station usb ports what do i do?


I have a solutions that might work, please for the love of god, next time give it as much detail as possible. Navigate to Start>run type:MSCONFIG. Enable everything unless you are absolutely sure you don't need it.
Right click on My Computer, click on properties. Go to the hardware tab at the top, click on device manager to see if there is a conflict.
Try a different port.
Try the hub on a different computer.
If your hub has a power input, now would be the best time to plug it in.
Plug directly into computer.
Make sure the device is plugged in securely, same goes for the devices plugged into it.
If that port is for power only and you plugged it in thinking it would work for data, please don't ask.
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1 Answer

Equipment fails after hub is used


If you need additional USB ports, the best way to go is to get a USB card that fits into the computer. That way it comes with a CD software program and can be updated. They are now USB 2 configured and work great. I have had to remove a number of USB hubs to fix other computers that have had the same problem.
Hope this info is of some help. Bud

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1 Answer

Computer says no...


What do you mean by not reconized? Does it still show up when you plug it in and just tell you its not reconized? or does it just not show anything at all? If it comes up then I suggest going to Lexars website and downloading the drivers for your LPD-400 so your computer will be able to interact with it...make sure its the mac drivers.

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