ran full system scan plus norton power eraser. has not fixed a virus or malware that makes laptop keyboard mistype. affects alpha numeric function of keyboard. for example, backspace displays: wpf, key p displays: pf (with multiple spaces after), etc. the a key displays: a (plus a hard return before and after). some keys seem to be unaffected. the alpha numeric function of my laptop works fine with an external wireless keyboard. suspect malware/virus. other people have posted similar problems with toshiba computers using norton security software (on online forums). please is there something i can download? help!