That sort of helped the memory stick problem out but the problem has gotten a lot worse first the psp cuts on itself then my sound doesn't work unless I have head phones and when I try to scan the green light will not come on at all and an Error sign comes up and when I try to play or do anything from my memory stick it will either say Cannot open file or cannot play music same thing with videos and customized themes but when I put them in my friends psp the memory stick works just fine

Can I virus be the cause of this because I started doing this after I downloaded something?