ASPIRE M5100 - E530. Windows Vista. 5 years old. No previous mechanical problems.
Computer won't start up from Sleep or Hibernate modes. Power & blue light still on - cpu make clicking sounds. Only way to turn computer off is to turn off power source. On occasion after re-starting, computer still will not start up - usually 2 or 3 attempts will do it. Otherwise, when powered up, computer operates fine.