Hi Sriram PV.
Welcome to SevenForums.
Why are you tagging on to a 3 year old thread? You could have started a new thread clearly defining your problem with full details.
1. What is the make/model/capacity of your pen drive?
2. Is it a new one? Still under warranty? If not, for how long have you been using it?
3. From the screenshot, I see that there are no files in it. If there are files, copy those a
to another media and then try to format it with HP USB Disk Storage Format Tool v2.2.3 Download HP USB Disk Storage Format Tool 2.2.3 Free - Windows-based Format Utility for HP Drive Key or DiskOnKey USB Device - Softpedia
and try to format it to NTFS.
(Right click on the .exe file and Run as administrator
. Make sure that the correct drive is selected for formatting. Better remove all other USB drives.)
Report results alongwith answers to the above two questions.