IF Dont Detect Your Flash Drive USB

There are several Solutions bro i would advice try serial wise here..

Solution 1

http://support.microsoft.com/kb/925196

Solution 2
Fix:
You can fix this issue by following some simple steps given below.

1. Click Start, click Run, type compmgmt.msc, and then click OK. 
2. In the console tree, click Disk Management. The DiskMAgnet  window will appear.

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3. On thisdisk magnet window, you can see some drives including the portable drive . Right click on your portable drive and click change drive letter and paths.
4. Now a assign a new drive letter which is not being used by any of your drives in My Computer.
5. After assigning the new drive letter your portable drive will show up in my computer with other drives
We hope the above solution will help to fix this trouble.


Solution 3


There is a simple solution for this in the case of windows.
Just do a "regedit" for StorageDevicePolicies key.
. Get into the Registry - Press Start -> Run, enter regedit, press Ok
. Click on My Computer. Then press File -> Export, give some file name to backup& registry. Just incase you ever need to rollback.
. Navigate to HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/StorageDevicePolicies
. In the right pane select "writeprotect"
. RESET the value to '0'


Repeat the same for ControlSet001 and ControlSet002 incase they exist.

Now plug in your USB drives and it should work. Else just reboot the machine and try. This has worked on most of the machines on which I tried.
Enjoy!!!

Solution 4


We all have Drive USB, pen drives, memory drives and it is a great data storage and safe data transfer gadget. But if you believe that flash memory is secure and stable forever, you are wrong.
Flash memory is considered insulated from jerks and related damage. However, these USB pen drive do get corrupt as I noticed. I use a top branded 512MB USb Drive am using it for the last 6 months and it worked very well. (I do not rely on cheap unbranded usb drives – you never know when your data is lost)
So of late, when I started to open my powerpoint presentations, they would not open. Thankfully I had a back up CD. So what went wrong. Well some files opened and rest did not. Some error had occurred during transfer or storage as the main file from which it was transferred worked well. So the problem was in a data storage as the transfer was smooth.
WARNING: Please try all these procedures at YOUR OWN RISK. I take no responsibility for your actions. There is no surety it will work. You may land up deleting all data or making your drive unusable. I am no expert in fixing usb drives. This is just my experience of how I fixed my usb drive. It is always best to seek professional support from the manufacturer (and some advise against formatting your USB lash drive).
Some tips to fix and format your USB Flash Drives

An important precaution is not to remove the pen drive while the data is being transferred. Always remove the pen drive after stopping it. Go to ‘Safely remove hardware’ (green arrow icon art bottom right corner), stop the usb drive and when it says it is safe to remove it, then remove it.


Always check by opening your important files before that important presentation. If it does not open now, probably it will not open there also. If it works now, it should work there also.
If for some reason your file does not work. Transfer another copy of the file with a renamed version – it may work..
If you delete the file and retransfer the same file with the same name and size, it probably gets written to the same area and will not work. A different name with a different size gets written to another area and can work. Its better to transfers 2 copies of your file anyway.
If you want the presentation to work on older computers (like Windows 98), do not forget to take the drivers CD which will allow such computers to recognize your plug and play usb drive. Always keep this invaluable CD handy, you never know when you encounter an older computer. I also keep a copy of the Wind 98 driver on the USB drive, can become useful on eday.
If your Flash Drive data is still getting corrupted

After going to My Computer, Right click the Removable drive, Go to Properties >Tools. Run Error Checking and Scan for errors and fix them. The files that are corrupt or in bad sectors already will not work but at least the new transferred files should work.

If all fails, format your drive.

It will delete all the data from your USB drive and make it fresh and hopefully remove all errors. The software for formatting comes on the CD or available on support sites for your branded usb drive on the net. For some reason, when I ran this formatting software, it would say the USB drive is not connected.
How did I format my flash drive?

Right click removable drive and select and format the drive. Then scan and fixes all errors. So all the bad sectors are fixed and my drive has become all new and is working well now.

In the File System drop down, you will see FAT and FAT32. So which one to select?
If you right click Removable Drive >Properties

The General Properties of the USB drive reveals it is FAT, so I use FAT in the format utility. Then just select “Quick Format” and “Start” and all data will be deleted and hopefully all errors are now gone.