on my wife's pc she got a virus and all the keys were quite messed up. i went ahead and formatted the dell 5100 inspiron and still some keys are not working. the fn key, caps lock, ctrl, shift... maybe more. either way i cannot figure out something more than software was effected but who knows. i went into the bios and it listed japan as the keyboard layout but would not allow me onto that field to change it. i went to the dell website and flashed the bios to no avail. do i need to do some battery removal and such and then do it or what... i would be using question marks more regularly but cannot. i can use the on-screen keyboard and all of these features work fine. any help would be great. thx.