🎰 USB Ports Not Working? Here's How to Diagnose and Fix It

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If your computer is having problems with a recently installed device, run the Device troubleshooter in Windows 7 to see if it can automatically fix the problem. In most cases, when you plug in a USB device, Windows will automatically find​.


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windows 7 - How to "restart/repair" an USB port? - Super User
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How to Fix USB Ports Not Working Issue. Easily! - Driver Easy
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usb port malfunction windows 7

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That day suddenly my PC's USB ports stopped working. I tried all USB Can anyone figure out which problem I'm facing? Is it related to my.


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Reinstalling USB Driver on Windows 7 | Other Information | T&D Corporation
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Fix Windows 7 “USB Device Not Recognized” Error | Windows EXE Errors
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usb port malfunction windows 7

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I have Dell Inspiron and suddenly all my 3 USB ports are not working. USB support is built into the chipset driver and Windows. You can try reloading the.


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usb port malfunction windows 7

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Describes a method to resolve a problem in which a USB port may stop to Windows to perform some of the troubleshooting methods that are.


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Usually, there are only a few different causes for a faulty USB slot – we This lead me to an Intel website with the download link for Windows 7.


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I can't live without USB ports and currently have 5 ports on my computer so phone without a problem, but couldn't get my camera recognized using the same port. It's a free tool that works with Windows XP, Vista and 7.


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usb port malfunction windows 7

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I have Dell Inspiron and suddenly all my 3 USB ports are not working. USB support is built into the chipset driver and Windows. You can try reloading the.


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I can't live without USB ports and currently have 5 ports on my computer so phone without a problem, but couldn't get my camera recognized using the same port. It's a free tool that works with Windows XP, Vista and 7.


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Is your usb ports not working suddenly on Windows 7? Don't worry. Instructions here will fix the problem.


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7. Update your USB Root Hub drivers. If USB is not working on your Windows 10 PC, you might be able to fix the problem simply by updating.


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usb port malfunction windows 7

Expand Universal Serial Bus Controllers. Please don't buy a new one because the device has no problem. This fixed a problem that I must have spent at least 20 hours trying to fix; give it a try. Select Properties C. Since the problem is occurring for two different devices, I think it's less likely a hardware failure on the mouse or keyboard. Active 2 years, 2 months ago. I had issues with Windows 7 dropping the USB mouse driver and reinstalling the mouse driver most of the time which was annoying as hell. Powering a mouse and a keyboard via the USB port should not be a problem. Viewed k times. Just unplug your device, and put it into another computer or laptop. But cycling the USB Root Hub device causes all the devices attached to that hub to reinitialize themselves. Active Oldest Votes. Can you check your event viewer for any obvious errors in the application or system logs? It could be possible that the instance of the drivers is failing. Some computers show the voltage in their driver settings. If it works on other computers it's definitely a problem with your USB port. Restarting the computer as well as disabling then enabling the USB device may not fix all the problems, as the device stays powered the whole time. Are they Microsoft default input drivers or custom drivers? Featured on Meta. Scott 18k 12 12 gold badges 54 54 silver badges bronze badges. Related 2. These hubs may unfortunately not be restarted without a reboot. The value 4 will disable USB Storage. Try it, and it will work definitely. I really wouldn't worry about that. It is not a lack of voltage, but instead one of current. Suddenly, that USB port doesn't detect the mouse and the keyboard even with the light of the hub is on , and the only solution that I found is restarting the laptop. You might need to reinstall the drivers. Is there some method, software, etc. All USB port devices connect to a 5v pipe but only has ma of water, if all of the devices don't get enough water electricity they don't work. This lets you reset and then reattach the device. Question feed. Post as a guest Name. In the right pane, select Start and change the value to 3. If you find problems please change your motherboard. Some USB ports may report restart required. Here's how to reset your USB after a power surge or other anomaly that causes devices to not register with the system:. Alternatively you can check if you have a power supply that fits to the hub, e. Go to Task Manager, and you will find a warning label on the device you are having problems with. I did this by turning the computer off, unplugging all USB devices, removing the laptop battery and AC power supply, and finally holding down the power button for 30 seconds. Think of it like a pipe -- the Voltage is the size of the pipe and Current is how much water you have. Hot Network Questions. Nirsoft is good at removing the drivers for devices that are not attached as well. And if any of that didn't work, try USBDeview. Sorry Forum removes them in the post so I can't type them literally. Also try inspecting the drivers after plugging in the device. Regarding the power consumption - or the problem - try finding the combination that brings trouble by using only one of the components, e. Signats Signats 41 1 1 bronze badge. You can read more about it on its download page. I have used this to fix a system that had a disconnected U3 USB drive still mounted preventing anything else in the port being recognized. I don't know what the problem is at this point, but you should inspect the drivers installed. The unfortunate side effect is that it causes all devices attached to that hub to reinitialize themselves, which could be problematic if you have other devices on that hub which are in use. But just some minutes and the keyboard and mouse goes undetected again In Windows you'd do 3 through the Device Manager or via the devcon. Email Required, but never shown. Ask Question. I guess not otherwise somebody would have said so by now Unplug then replug is the best solution, if possible. David David 1. The reason these are the only methods is due to the USB handshaking protocol, which is initiated by the USB device when it's plugged in, not by the controller. The best answers are voted up and rise to the top. Again: My old Dell Laptop produced only mA. TeamJica TeamJica 1 1 1 bronze badge. It only takes a minute to sign up. How I can check that voltage? The responsibility and usage of these methods is solely on you. Click Advanced Tab D. Try replacing it, contact experts, and change it. I tried all kinds of things to fix the problem, driver updates, clean boots, tech support phone calls, Internet software voodoo, but in the end I only had to reset my USB ports. Sign up to join this community. Sign up using Facebook. Super User works best with JavaScript enabled.{/INSERTKEYS}{/PARAGRAPH} The Overflow Blog. Sign up or log in Sign up using Google. Andrew Keith Andrew Keith 1 1 silver badge 4 4 bronze badges. None of the answers quite answer the title question. If you have no power supply added to the USB hub, check if that helps. In that USB hub, I use a mouse and keyboard. Sign up using Email and Password. You might see a resource conflict or some other warning in Device Manager. The failure is definitely on your laptop. Click OK. Feedback post: New moderator reinstatement and appeal process revisions. Linked 1. New post lock available on meta sites: Policy Lock. How Stack Overflow hires engineers. Right-Click B. Peter Mortensen Click Ok Click Ok 3, 9 9 gold badges 38 38 silver badges 43 43 bronze badges. Each device uses a certain amount of the ma available if you over load the circuit then all of the devices can behave wonkey. Unplug, then re-plug, the physical device connected to the port. Asked 10 years, 6 months ago. Up-vote if it helps so more will see. Thomas Thomas 2 2 silver badges 1 1 bronze badge. {PARAGRAPH}{INSERTKEYS}Super User is a question and answer site for computer enthusiasts and power users. Came here myself via google search and was able to accomplish what I needed in both methods I listed above. There are three ways to "restart" a particular USB port: Reboot the computer.