Thumb Drive not Recognized in Windows XP

You can attach a USB based device with a computer that runs on Windows XP. Then, you try to scan for hardware devices. However, the computer detects a device attached, and you do not see the device in My Computer folder. Does the problem look familiar to you? Well, it happens once a while with everyone.
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To fix this issue, I would recommend the following action plan:
1st First, we patiently waited a little to ensure that the problem is not related to your computer is busy and dealing with other things.
2nd If you include this device into a USB hub, it could point to the center failure to perform due to power failure or just outside. Try to switch the device directly into a USB port on the front, or if it does not help, in the back of your computer.
3rd Restart the computer and try again to join back.
4th Check performance USB drive to another computer and see if the problem connected with the drive itself.
5th If the USB device works fine on another computer, you can return to your original computer problems.
6th Go to Start-> Settings-> Control Panel-> Administrative Tools-> Disk Management to drive in the computer and see if the letter is connected with USB. If not, assign a drive letter.
7th Access Device Manager and check whether you see any signs of your drive there. Keep in mind that depending on the configuration computer, your USB drive can appear in different sections, such as disk, DVD / CD-ROM devices, or Universal Serial Bus controls as USB Mass Storage. If not see if the yellow question mark, delete. Then, scan for software changes and see if the drive will appear as a healthy element of the configuration.
8th Access Device Manager and remove all items related to USB such as USB root hub, etc, reboot the computer twice to let Windows install properly, then try the flash drive again.
9th Next step is the registry change related, so you should be careful making any changes.

The best way is to play safe, and making a backup registry (registry by exporting the registry patch) before making any changes.
1st Get in the Registry Editor - Press Start -> Run, type regedit in the window, and press OK.
2nd Click on my computer. Then press File Export, assign easily recognizable file name to backup the registry.
3rd Navigate to the following registry key HKEY_LOCAL_MACHINE / System / CurrentControlSet / Control / StorageDevicePolicies.
4th In the right panel select "writeprotect".
5th Reset the value to '0 '.
6th Repeat for the registry key ControlSet001 and ControlSet002, if they exist.
7th Now plug your USB drives and should work. Else just reboot the machine to try.
10th The last step is also associated with registry changes, and recommended by the Microsoft Knowledge Base, the deletng UpperFilters registry value and LowerFilters registry value. To do this, follow these steps:
1st Click Start, click Run, type regedit, and then click OK.
2nd Locate and then click UpperFilters registry value. This value is in the following registry subkey: HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Class \ {4D36E967-E325-11CE-BFC1-08002BE10318}
3rd The menu Edit, click Delete, and then click OK.
Note If you receive an error when you try to delete the registry subkey may not have appropriate permissions to edit the subkey.
4th Locate and then click LowerFilters registry value. This value is in the following registry subkey: HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Class \ {4D36E967-E325-11CE-BFC1-08002BE10318}
5th The menu Edit, click Delete, and then click OK.
Note If you receive an error when you try to delete the registry subkey may not have appropriate permissions to edit the subkey.
6th Exit Registry Editor.
7th Restart the computer.