Hello frnds i have a strange problem, i have a 4 GB Transcend and other 1 GB ordinary pen drives they used to work properly b4 but now they stopped showing up in my computer. Transcend is just 1 Month old and other drive(memorex) is 3 yrs old. I thougt there is some virus in my system and formatted my system, but no use and tried them in other system that too no use. If the problem is with pen drives then how cum with both, one is just 1 month old. Plz help me to solve this mystery