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Trouble:
We have received a problem from some of our readers, who are not able to access their USB pen drives and other portable devices.
As according to the readers their system was successfully detecting USB devices, but may be after some kind of virus attack their system now does not detect any type of USB devices.
Let’s see how we correct this problem.
Fix:
In normal cases when you think your system is not detecting pen drives, it could be a case when your computer detects your pen drive but does not show up in my computer.
Method 1:
This could be due to no free drive letter has been assigned to your pen drive, you can refer to this post to know what to do in that case.
Still, if you don’t see your pen drive under device manager or if you see some question mark suddenly on your drive in device manager then there could be problem with your registry also,
Read method 2 given below
Method 2:
If none of your USB devices detect ,this could be due to wrong registry entries. i.e you need to delete UpperFilters and the LowerFilters registry values.
Follow the procedure listed below to correct your registry:
1. Open Start >> Run, and type "regedit" (without double quotes), and click OK.
2. Locate UpperFilters registry value. it resides in the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E980-E325-11CE-BFC1-08002BE10318}
3. Click on Edit menu, and select Delete and click OK.
Note: If you receive an error when you try to delete the registry subkey, you may not have correct permissions to edit the subkey.
4. Locate LowerFilters registry value. It resides in the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}
5. Click on Edit menu, and select Delete and click OK.
6. Exit Registry Editor and restart your system.
We hope this helps to fix the trouble.
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{ 49 comments… read them below or add one }
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My pen drive detected but when we want to to open it then message comes “please insert device”. so pls help me sir. for this kindness i wil be much thankful to you.
still i am unable to delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}. please tell me how to delete?
in my system i will insert pen drive i can open any file but i connot copy
but is showing message “no message File” like this comming…please help me
actually when i have inserted my pen drive, pc requests for virus scan. i didnot. i tried to open up a doc file which could not be opened. then suddenly the desktop screen came out and pendrive folders closed. after i removed the pendrive from pc, i tried to replug in. pc detects the hardware and successfuly installs the hard ware but in my computer page it can not detect my pendrive. right clicking also i cannot enter into the pen drive. WHAT TO DO. PLEASE ADVICE.
my pendrive shows error 10
how to solve this problem
please inform me immediately.
my pc is detect pen drive but not opening any file or folder.
How to solve the problem? plz help
Dear Sir
I have transcend 8GB pen drive, and when i plug it in usb port it shows some error like pen drive has not dettected. and also not appear in My Computer. can you help to solve this problem and please help in this regard, i’m very thank full to you
Pen drive not detected, tried on 3-4 computors. Tried what u mentioned about deleting from registry editor, did not solve my problem. Pendrive still not detected, do I need to replace it?
@Rakesh
yes, get it replaced
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