Why is it flashing 0?

Turn power completely off at the breaker then turn itback on,if it is still flashing then you didn't read the flashes right,read how many flashes there are after it pauses,until it posses again,then take that number of flashes and look at the code witch is in the furnace door

Sounds like the partition table is screwed up. I've tried simulating it as best I could. I created a 25 MB drive in this video and edited the partition table to show only 2 KB. Formatting only allows me to format the 2KB in your case it would be 0KB and formatting won't do anything. Try the steps in the video.

Not sure if this is your problem,, Have you made sure thse childlock has not been selected/

Is Windows failing to boot?ust do the following.
* Boot up the PC from your Windows installation disk.
* Select the "Repair your computer" option
* Select "Command Prompt"
* Input "bootsect.exe /nt60 SYS /force" (without quotes)
* Restart the PC

Try it on another usb port..or If the windows can't format try formatting it from the command prompt if it's not working than must be pendrive.. i think there's no problem with other pendrives.. or the one that you have

No and no, the flash is by default programed to shut off after 1 minute .If you were using the flash on-camera, the flash would automatically power itself on when camera activity is detected but when the flash is detached, it doesn't wake back up.
To change this you have to turn off the auto shut off in the flash menu:
1. Power the flash on
2. Hold down the back light /C.Fn button until "Fn 00 0" appears on the screen
3. Rotate the selector wheel until you see "Fn 01 0"
4. Press your selector button down so that the 0 begins flashing
5. Rotate your selector wheel to change the 0 to a 1
6. Rotate the selector to the "Fn 14 0" position and set it to 1
7. Press your selector button to save this parameter
8. Press your Mode button to return to the main screen
Now your flash stays on as long as the flash switch is turned on ON, and as long as you have juice in the batteries.

Do not forget to turn off the flash after you are done.You can reverse it anytime, but you have to read the manual for that..

Same setup can be found in the manual

format or flash your phone using data cable

Try formatting the drive. Assuming Windows XP, just open your "my computer" icon, right-click on the device and choose format. Be aware, formatting will remove any data you may have had on there previously.

If you're using another OS, or if it's an existing drive, please re-state your question giving further details (what OS, what you are trying to retrieve, etc).

I will need to get your model number to help you better. Thanks Sea Breeze

Flashing CL means that your clock is not set.