Please try these listed instructions and see if they help. There are several ways to do this, but I normally try this one -
There have been a few problems with Windows formatting certain USB devices using FAT32. However, Microsoft does have an update that will fix the problem. Another way to format the USB memory stick is with the safer NTFS format. Windows has no issues doing this. If you do not want the NTFS format, then proceed to Step 6.
Read more: How to Format Memory Sticks | eHow.com http://www.ehow.com/how_5047286_format-memory-sticks.html#ixzz2IKJ8fYD0
1 - Connect your USB device to your computer.
2 - Right-click "My Computer." Select the "Manage" option.
3 Select the "Device Manager" option in the left-side pane.
4 - Double-click "Disk Drives" in the right-side pane. The drop-down will display your drives. Right-click your USB device (This will be apparent. It will say something like "Generic USB 2.0 USB Drive"). Choose the "Properties" option. The "Properties" window will open.
5 - Click on the "Policies," tab and choose the "Optimize for performance" radio button. Click the "Apply" button. Close the window.
6 - Go to "My Computer."
7 - Right-click on the USB drive you want to format. A drop-down menu will appear. Choose the "Format" option. The format window will appear. Under "File system" choose the "NTFS" option. If you do not want the safer NTFS option, then choose "FAT32."
8 - Click the "Format" button. The device is now formatted.
I hope this method helps you -
Edited by noknojon, 18 January 2013 - 06:45 AM.