My pen drive is infected by w32.autorun.gen.in virus avast 4.8 home addition is unable to delete it .Please tell me what to do?
Try Flash Disinfector:
http://experi3nc3.wordpress.com/2007/05/10/flash-disinfector-by-subs/
Let your USB drive plugged and run Autorun Eater or Flash Disinfector, allowing them to clean up all drives. They would create hidden folders named autorun.inf in each partition and every USB drive plugged in when you ran it. These folders protect your drives from future infection. After that, reboot your computer.