UBS Ports Stopped working

Italiabella
Italiabella used Ask the Experts™
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Hello, i am using a windows surface laptop. all the sudden the USB ports stopped working. When i plug in any flash drive or the receiver for my wireless mouse i receive the following error message ( see 2 attached pics).
USB Error 2Any idea how so resolve this issue please

Thank you,
USB1.jpg
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SeanSystem Engineer
Commented:
Assuming that the USB port is still good I would uninstall the driver and reinstall.

Author

Commented:
ok let me try that, when i plug in any Usb device i don' t hear any sound that usually hear when the system reconnize a new device..i am trying now and i will keep you posted..thank you Sean
Commented:
This is much more simple than that, and the message is EXACTLY what is wrong. USB ports are rated by how much current they can supply to a device. If the device you plugged in draws too much power, the system (might just be a hardware switch) will turn off the port to prevent you from damaging your device.  I am assuming that you have restarted the system since getting the over-power message? Usually that should reset the hardware and allow it to operate again.

Sadly, it is still possible to overload a port, and many have small fuses that can blow out to further protect the rest of the device. This can often happen if an already powered device is plugged into a USB port that supplies power, or something shorts out in the USB port causing a power to ground short lasting too long. (A bad device.) So basically, the Surface is not able to power  up the device attached so it is not recognized by the system.

Sometimes, a powered hub connected to the USB 3.0 port might still allow devices to work, as this is a power problem and typically not a data connection problem, and the hub will then power the attached device. I would get an externally powered USB hub, plug that in to the USB port,  and power it up and try connecting your devices to the hub and see if they work now. If yes, then the power to the USB port is shot. It is often repairable by having someone replace the small fuse.

Here is an example of how someone else damaged their Surface: https://superuser.com/questions/848132/ruined-surface-pros-usb-port
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Author

Commented:
i truly worked with the Lenovo tech support and updated bios, chipset, and any possible driver. not working. they are still troubleshooting to see if its software or hardware....but this guy is not aware of teh possible fuse blown out...i will keep everyone posted...

Commented:
I was a designer at Apple, and I know that we had USB fuses on every USB port. I can’t believe that they would not protect the machine by leaving them out as they cost almost nothing to add.  

So do please try a powered HUB and see if the devices show up. If they do, then the USB port is no longer supplying power, and the Lenovo tech support person just does not know about the fuses.

Note that they may use “resettable fuses”  called a PTC, or thermistor, but they do the same thing and they can fail completely.
WakeupSpecialist 1
Commented:
Have you tried to powering down and shutting off the Laptop.  Unplug it, pull the battery if you can (main battery not bios battery).  The insert your USB devices you want to use (mouse/USB Memory stick etc).  Put the battery back in and plug it back in and then power up the laptop and see if it does anything different?
Top Expert 2013
Commented:
are there other usb devices connected?
if yes - unplug them all, then test each port

Author

Commented:
guys, we run all the possible software test and the Lenovo tech confirmed that its an hardware problem.

I know now that Owen got it right a way!! Owen. question for you. if the fuse are resettable how do i reset them :). also if a fuse when bad is that possible that all the USB ports went bad at the same time ?

Thank you,

Commented:
Sadly, I do not know their hardware. If they use resettable fuses, they should reset themselves unless they got damaged. If they are just fuses, they are blown and need to be replaced. You might find a place like Geek Squad or another PC repair place that can replace them. They look like little resistors (usually yellow) on the board near the ports.  Here is an article on ployfuses explained: https://elinux.org/Polyfuses_explained. Maybe leaving it off for a few days might heal those fuses. I really don't know that machine.

But seriously, if it is just the power, then a powered hub might still work. A USB device usually gets its power from the USB port. If that is dead, the device does not get powered up, and the computer will not see it. But a powered USB hub can supply the power to bring up the USB device, and often the data connections will still work. (One of my Macs had blown fuses and I just used it as a desktop with a powered hub and it worked great.)

If you need it as a portable and wont be able to carry a powered hub, then repairing it might be the easiest way to go.  I have no idea if Lenovo will even try. But any good PC tech in your area should be able to open it up and test for bad fuses.

As for all going bad, it is possible. They may have one fuse to protect the USB power supply section of the board, and that blew. Again, every hardware vendor does it differently.
I am assuming you are asking because non of the ports work?

But before you try and fix it, I would still borrow a powered USB hub and see if the ports will even respond when powered externally.

Author

Commented:
Thank you everyone and I apologize for the delay I was traveling outside the country and I forgot to close this question before my departure.
WakeupSpecialist 1

Commented:
No worries! Glad you were able to resolve this and you hada safe trip!

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