Problem in installing external devices

Hi,
I have Vista Home Premium pre installed in my HP Pavillion DV6000 series laptop.
It was working fine for some time .  but now its started giving problems ... whenever I tried to use Kingstom Pen Drive, or any other external device it start finding the drivers and then lost.

when i plug in the device it shows in the diskmanagement but not in the my computer.
I tried to format the drive or assign drive letter .. it gives error "the operation failed to complete because the Disk Management console view is not up-t-date.  .....

Could anyone help me out

priyankkguptaAsked:
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nobusCommented:
first delete all the usb entries in device manager, reboot and test. If still problems , try these :
---------------------------------------------------------
unplug pc from power for 30 minutes
then test
-----------------------
What happens when you start the removable service. Delete the upper filter and lower filter from here
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{36FC9E60-C465-11CF-8056-444553540000}
usb device.
Delete upper and lower filter and restart the computer.
---------------------------
Vista :
Remove volume.inf and volume.PNF from C:\Windows\Inf and replace it  with files in C:\Windows\System32\DriverRepository.  Also replace volsnap.sys in C:\Windows\System32\Drivers from same directory and reboot.  
you may have a  BSD on reboot.  Reboot, everything normal.
 Insert USB Flash Drive, unknown device shows up in Device Manager.
Tell system to search C:\Windows\System32 with SubFolders checked and it is now able to find and install Generic Volume Driver.  
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priyankkguptaAuthor Commented:
"You may have a BSD on reboot"
What do you mean by BSD
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priyankkguptaAuthor Commented:
thanks for your help
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nobusCommented:
Blue screen of Death, referred to as BSOD
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nobusCommented:
...and what worked in your case ?
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