计算机病毒危害

                 1计算机数据信息破坏

                2占用磁盘空间

                3抢占系统资源

                4影响计算机速度

                5不可预见错误和危害

               6兼容性

                 7心理压力

                                                                                               计算机病毒症状

              1屏幕显示异常

             2  系统声音异常

             3系统工作异常：1系统引导惜败，不承认硬盘

                                        2黑屏

                                        3系统运行速度慢

                                        4程序无法运行

                                         5键盘工作异常1;响铃   

                                                                2换字符

                                                                 3重复字符

                                                                 4封锁键盘

                                                               5 输入紊乱  

                                                                  6打印机异常