Cruzer micro U3 4 gb not recognized all of a sudden

Hi; the a.m.drive that contains important files (of course there is no backup) that my wife uses for work.

When she plugged it in this morning, the orange light flashes for a short moment and then that is it. The PC can not find it, hardware changes are not registered or anything else. I tried different PC’s with the same result: nothing!

Does anyone have any idea what might be going on or how the data can be saved?

Thanks for your comments!

Hi. I hope this link helps you. 

http://kb.sandisk.com/app/answers/detail/a_id/10/kw/not%20recognized 

USB Device not recognized

Solve with Task manager.

To solve with task manager, first you have to go to task manager. Click “Control +all + delete” together on the desktop. then it will open task manager. after open, go to process tab in menu.
Find “rund1132.exe” named task, and Click end process.

source and other 5 methods - http://www.gogorapid.com/how-to-fix-problem-ejecting-us…

Solve with Task manager.

To solve with task manager, first you have to go to task manager. Click “Control +all + delete” together on the desktop. then it will open task manager. after open, go to process tab in menu.
Find “rund1132.exe” named task, and Click end process.

source and other 5 methods