USB Port Not Working Windows 7

If you’re one of those PC users who have “USB Port Not Working Windows 7″ trouble, then you definitely would like to know the reasons behind it. We will discuss the most common reason behind problematic USB ports, how to figure out which device is causing your USB port trouble, and the options for fixing device driver related Windows 7 USB Port troubles.

Most Common Reason Behind USB Port Not Working on Windows 7

How to Figure Out which Device is Causing Your “USB Port Not Working” Trouble

Fixing Windows 7 Device Driver Related USB Port Troubles


Most Common Reason Behind USB Port Not Working on Windows 7

The most common reason behind “USB Port Not Working Windows 7″ trouble is device driver related (missing, corrupted, incompatible, et al); either with your USB Host Controller drivers or with the specific USB device drivers. In most computer forums, PC users report that they were troubled by problematic USB ports after installing or upgrading their OS to Windows 7. They claim that their USB devices were working properly with their PC before they installed Windows 7. Others claim that the USB device that they are trying to attach to their Windows 7 PC is working properly when using other computers that are powered with Windows Vista or XP.

There are also cases when you will encounter “USB Ports Not Working” trouble all of a sudden. These are the cases when your Windows 7 computer cannot detect one of your USB devices so suddenly, even though you were able to use this USB device with your PC a short time ago. You can also encounter USB device troubles while you are using a USB device, and the fault also lies with the device drivers of your USB ports or of your USB device.

In order to fix this, you need to figure out which device is really causing your USB port problem.

How to Figure Out which Device is Causing your “USB Port Not Working” Trouble
As a PC user, you must pin point the device causing your “USB Port Not Working Windows 7″ trouble in order to fix this problem. You can do this by reattaching your USB device to your PC, and then carefully observe your taskbar for any popup messages, since you can get useful tips on how to fix your problematic USB ports from these popup messages.

a) USB Device Error Popup Messages

USB Ports Not Working Windows 7 Error 1

The above popup messages indicate that you have USB port or device related trouble, and you can verify it by viewing your Device Manager:

  1. Click the Windows button
  2. Select Control panel
  3. Click System and Security
  4. Click Device Manager

b) Device Manager with USB Device Problems

USB Ports not Working on Windows 7 Check 2

You will notice devices marked by a yellow warning symbol, and these devices are actually the USB devices that your PC can’t recognize. But what if there are no popup messages whenever you attach a USB device or any USB devices to your Windows 7 PC and your PC can’t detect any USB devices? The most possible reason is that the device drivers at fault are the USB Host controller drivers, and this is the real case of problematic USB Ports.

C) Device Manager with USB Host Controller Problems

USB Ports not Working Windows 7 Check 3

You can also verify this through the Device Manager, but unlike Unknown USB devices, you will notice multiple devices marked by yellow warning symbols and all of these devices are listed under the category labeled as “Universal Serial Bus Controllers.”

Fixing USB Port Driver Related Troubles

The device properties will provide you with the reasons behind your USB Port trouble, and possible tips on how to fix it. Simply Right-Click one of the devices marked by a yellow warning symbol, and then Click Properties.

d) Device Properties – Device Status Windows

USB Ports not Working WIndows 7 Check 4

Several of the most common Device Status details are provided above, and all of these cases (together with other device driver related troubles) can be fixed by installing the correct and updated device drivers, either for your USB device or for the USB Host Controller of your PC. You must remember that you need to install the correct and compatible device drivers based on your OS (if it’s 32-bit or 64-bit,) since there are device drivers that are only designed for 64-bit OS and will not function properly when installed on Windows 7 32-bit OS. You can check your OS bit-type by clicking the Start button, then right-click Computer, select Properties, and then look for the System type.

e) Windows 7 OS Type Information

USB Ports not Working WIndows 7 Check OS Type

After you figure out the device causing your USB port trouble and if you already know the Windows 7 bit-type installed on your PC, you can now install the correct and compatible drivers to fix your “USB Port Not Working Windows 7″ trouble.

If you don’t have a backup copy of device drivers, you can take a risk (computer viruses, malware, wrong/incompatible device drivers, et al) of searching and downloading drivers online. On the other hand, if you don’t want to suffer from the online risks and if you want to save your time and energy, you can consider an option discussed in our post: “Fix Unknown Device Driver Problems with Ease.”

USB Ports not Working Windows 7 Auto Fix