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USB not recognized!!

RG8
Visitor

USB not recognized!!

Hey guys....when i conncect my phone to my PC using USB it is displaying USB not recognized...I tried on my laptop. home PC and office PC, same result...Changed USB Cable, still the same...I use windows 7...32bit at office, 64bit at home!! My phone was working fine till last week...it happened all of a sudden!!

11 REPLIES 11
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_alexdon_
Expert

Do you have usb debugging mode enabled?

alexdon
Sam
Legend
Legend

To solve the issue, open Device Manager on your computer to reinstall the driver for your device while your device is connected with your PC via a USB cable.

Microsoft Windows Vista and 7 users


To open Device manager on your computer

Click on the Start button. 
In the Search box, type device manager, and then press enter. 

Microsoft Windows 8 users


Method 1


To open Device manager on your computer

Click Windows Key + X to open the Start Menu. 
Select Device Manager from the Start Menu.


Method 2


To open Device manager on your computer

Click the Desktop Tile to open the Desktop. 
Click >> at the bottom right of the taskbar. 
Select Control Panel from the Menu. 
Select Device Manager from the list of control panel items.
Note: If you do not see the screen with the Device Manager option, click the View by drop-down menu and select Small icons.


Microsoft Windows XP and 2000 users

To open Device manager on your computer

On the desktop, right-click on My Computer and click Properties. 
In the System Properties window, click the Hardware tab. 
In the Hardware, tab click the Device Manager button.


To reinstall the drivers for your device

Scroll down to the Universal Serial Bus controllers (USB section) of the Device Manager window. 
Look for an MTP Device: Media Device, Unknown Device or any other reference to your phone. Click on this entry and choose "Uninstall" whilst leaving the device connected. 
Wait a few minutes, and the computer will reinstall the drivers for the device.
Now, the phone is accessible via Computer/My Computer on your computer.

 


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RG8
Visitor

@Sam: Its not working...i uninstalled the drivers, waited for sm time with data cable still attached and nothing happened. I waited for around 30 minutes. Then i unplugged the cable, plugged it again, same problem.

@alexdon i tried both, with debugging on and off!!

Tags (1)
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_alexdon_
Expert

On the Xperia U section,I have seen people complaining about the phone not charging.Someone said it is hardware related,at the charging hole.

alexdon
RG8
Visitor

Any idea how to solve the problem??

profile.country.RO.title
_alexdon_
Expert
RG8
Visitor

That is different...in my casephone is acting normal towards charging...let it be using charger or USB via PC. It's just that I can not open my phone on PC as when i connect it, charging LED gets on but error comes on PC - "USB not recognized". There is no problem with charging.

profile.country.RO.title
_alexdon_
Expert

Are you willing to try a repair of software?

alexdon
RG8
Visitor

I am tired of repairing software for every problem...any other solution??