Parca-i un virus, dar in fine, fa asa: la contol panel, la folder options, la al 2-lea tab("view") selecteaza show hidden folders. apply si ok. acum te duci in my computer, in C:, in folderul windows, la temp si stergi folderul wer54be.dir00.Sa nu te sperii, ca windows-ul nu se buseste, deoarece temp arata fisiere temporare, ce pot fi recreate de calculator daca e nevoie.