try banging it on a car's passenger seat or your leg. seryoso. nasira dati yung 4th gen classic ko (hard drive issue) eh expired na yung warranty tapos nung dinala ko sa apple center, 8k daw to have it fixed. lugi ako, 8k for repairing a 4th gen classic, bibili na lang ako ng mas bagong model. so pagbalik ko kagad sa kotse, hinampas ko sa passenger seat, gumana sya for 3 days ata tapos sira nanaman. tapos hinampas ko naman ng tatlong beses sa hita ko, gumana sya for two months. then i found on the web that a loose hard drive might be the cause of my problem so i opened it and placed a calling card inside it to hold things in place and ever since hinde na sya nagloko. try looking for home remedies on the net sigurado meron yan