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机器配置:一台惠普Vectra VL微机,Pentium166CPU,32MB内存,S3 Trio64v2显示芯片,联想14英寸显示器。故障现象:该机原本工作正常,为防止非法使用计算机,在BIOS中设置开机密码,存盘退出。加电后,屏幕全黑,无报警声,键盘灯亮。敲击键盘时有蜂鸣声,屏幕无反应,键盘锁死,看似“死机”。再次加电,故障依旧。故障排除:依照常理,设置开机密码不应造成“死机”的故障。开始也考虑过对CMOS放电,但仔细观察,发现机器刚开机时,键盘仍然可用,敲击数次之后就被锁死;同时发现按Reset键时,屏幕有关机反应,说明有信号到显示器,显卡到显示器的连线没有问题。怀疑机器是被系统锁死的。令人疑惑不解的是,看不到开机密码的系统提示,于是怀疑显示模式可能有
Machine configuration: a Hewlett-Packard Vectra VL microcomputer, Pentium166CPU, 32MB memory, S3 Trio64v2 graphics chip, Lenovo 14-inch display. Symptom: This machine was working properly, to prevent illegal use of the computer, set the power-on password in the BIOS, save and exit. After power on, the screen is black, no alarm, the keyboard lights. When beating the keyboard beep, the screen no response, the keyboard lock, seemingly “crash ”. Power again, the fault still. Troubleshooting: According to common sense, setting the power-on password should not cause a “crash” fault. Initially also considered the CMOS discharge, but a closer look and found that the machine just turned on, the keyboard is still available, knocked a few times after it was locked; also found that by pressing the Reset button, the screen of the machine response, indicating a signal to the monitor, Graphics card to monitor the connection is no problem. Suspect the machine is blocked by the system. Puzzling is that you can not see the system prompt boot password, then suspect that the display mode may be