Computer will not recognize usb flash drive windows 7

Was it working fine before? Was this reply helpful? Yes No. Sorry this didn't help. Thanks for your feedback. This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread. I have the same question 5. Report abuse. Details required :. This will open the Device Manager. Find the Universal Serial Bus controllers. Go to Control Panel , then System and security.

Under the Windows Update section, click on Check for Updates. If it is not updated the notification is not green in color , update it accordingly as indicated by the system. Follow the updating wizard and restart your computer accordingly. Go to Application and click on Utilities. A pop-up window will appear and click on the highlighted commands as marked in the image below: Under Devices , click External Devices to manually connect the unrecognizable flash drive.

Shut down your Mac. Press the Power button and subsequently hold down the Command-Option-P-R This should be done before the grey screen appears. Your Mac should reboot itself. Let it go after the start-up chime. Press the Command-Spacebar buttons simultaneously, plug in the flash drive and go to the Application Click on the Disk Utility option.

You will be able to find the flash drives that need to be fixed in the left panel. Click on the Erase button to complete the process. USB recovery formatted. Data recovery flash drive. Data recovery pen drive. Data recovery memory stick. Unformat USB device. USB not recognized? Fix unknown USB device. Pendrive not detected. What size of USB you need. If it does not contain any partition, you still can see an unallocated space. Step 2. Try the following solutions if your drive does not appear in Disk Management.

Do not use USB hubs. The USB hub does not supply enough power for your drive. You should directly connect the drive to USB port. Plug flash drive into different computers. Create a new simple volume with Disk Management if your drive is marked as an unallocated space. You can right-click the unallocated space, select New Simple Volume from its context menu and follow the instructions on the wizard to finish the pending steps. You can right-click the drive, select Format from the list and then select file system and hit OK to start the process.

Clean the drive with Diskpart if you can see the drive but cannot format it in Disk Management. This may be caused by a messy partition scheme on the drive. With it, you can format partition without any obstacle. Besides, you can use it to create partition , change drive letter, change file system, etc. Step 1.