SONY USB not reading

Oct 17, 2013
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My USB pendrive is of sonyUSM 8GU. before it was was working fine but one day as my system got hanged i had to remove it without ejecting it.. after that the light would flicker two times and goes off without being read in the system. i am using windows 7 ultimate. also i tried this pendrive in other systems as well. there also it shows the same. please help me to find a solution for this.
Thank You