主板点不亮的各种原因有什么？
各种情况的，回答详细的给分
推荐回答（4个）
有可能是电脑电源发生损坏了。
有可能是触发电路发生损坏了。
有可能是电脑的开机电路发生损坏了。
电脑机箱主板，又叫主机板(mainboard)、系统板(systemboard)或母板(motherboard)；它分为商用主板和工业主板两种。它安装在机箱内，是微机最基本的也是最重要的部件之一。
主板采用了开放式结构。主板上大都有6-15个扩展插槽，供PC机外围设备的控制卡（适配器）插接。通过更换这些插卡，可以对微机的相应子系统进行局部升级，使厂家和用户在配置机型方面有更大的灵活性。
把内存拔掉，报警就是内存坏。再不报不是主板就是CPU坏了。
大哥们 主板点不亮是什么意思？ 你所只的点不亮 是不是电脑点不亮？如果是的话 我告诉你 点不亮不一定是主板坏了！ 当你的主板点不亮时候 先拿下BIOS的电池 等5秒在放回去 看看电脑亮不亮 因为有时候有静电的原因 其次是把内存拿下来擦擦 比且清清插槽的灰尘 再插上 看亮不亮 还不亮 就吧显卡 拿下来擦擦 清清灰尘再插回去 看亮不亮 要是还不亮 就把硬盘的数据线 拔下来 因为如果硬盘烧了 主机也点不亮 如果上述方法你都试过了 还点不亮 那可能是你的主板坏了 这时就要把内存拿下来 点吓机器 看看报警不？不报警 那是主板坏了 要是报警 并且正常的话 哥们 那就是你的CPU坏了 CPU坏的可能太小了 我干了这么长时间的技术 就遇到过3次是CPU坏的 我都干了快4年了！
1、电源故障（市电、电脑开关电源）
2、硬件故障：显卡、内存、CPU、主板等如果坏了当然开不了啦，其次如果在早期的主板中，对于多硬盘或光驱跳线错误或数据线接反也可能开不了机
3、接触不良：主要是板卡（常以显卡为主）和内存接触不良导致开机黑屏
4、散热不良：主要是有风扇的部件，如显卡、CPU、电源及硬盘
5、跳线或接线错误：主板跳线或硬盘跳线错误可能导致这类原因，如果其它的线如电源与主板的连接线或主板与硬件的连接线错误，轻则开不了机，重则烧坏硬件了。
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