电脑故障快速解决指南：掌握这10个必备cmd诊断命令

在电脑使用过程中，我们难免会遇到各种故障。而Windows命令提示符（cmd）中的诊断命令可以帮助我们快速定位问题，从而解决电脑故障。以下是一些必备的cmd诊断命令，让你成为电脑故障的“侦探”。

1. ipconfig

功能：查看本机IP地址、子网掩码、默认网关等信息。

使用方法：在cmd中输入ipconfig，按回车键。

示例：

C:\Windows\system32>ipconfig

Windows IP 配置

以太网适配器 本地连接：

   连接特定硬件的以下连接信息：

   连接状态           : 已连接
   媒体状态           : 媒体相关
   媒体类型           : 以太网
   自动配置 IP 地址   : 是
   IPv4 地址          : 192.168.1.100
   子网掩码          : 255.255.255.0
   默认网关          : 192.168.1.1

2. ping

功能：测试网络连通性。

使用方法：在cmd中输入ping [IP地址或域名]，按回车键。

示例：

C:\Windows\system32>ping www.baidu.com

正在 Ping www.a.shifen.com [220.181.38.148] 具有 32 字节的数据:
Reply from 220.181.38.148: bytes=32 time=17ms TTL=56
Reply from 220.181.38.148: bytes=32 time=17ms TTL=56
Reply from 220.181.38.148: bytes=32 time=17ms TTL=56
Reply from 220.181.38.148: bytes=32 time=17ms TTL=56

3. tracert

功能：追踪数据包到达目标主机的路径。

使用方法：在cmd中输入tracert [IP地址或域名]，按回车键。

示例：

C:\Windows\system32>tracert www.baidu.com

Tracing route to www.a.shifen.com [220.181.38.148]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  192.168.1.1
  2    2 ms     2 ms     2 ms  192.168.1.2
  3    2 ms     2 ms     2 ms  192.168.1.3
  4    2 ms     2 ms     2 ms  192.168.1.4
  5    2 ms     2 ms     2 ms  192.168.1.5
  6    2 ms     2 ms     2 ms  192.168.1.6
  7    2 ms     2 ms     2 ms  192.168.1.7
  8    2 ms     2 ms     2 ms  192.168.1.8
  9    2 ms     2 ms     2 ms  192.168.1.9
  10   2 ms     2 ms     2 ms  192.168.1.10
  11   2 ms     2 ms     2 ms  192.168.1.11
  12   2 ms     2 ms     2 ms  192.168.1.12
  13   2 ms     2 ms     2 ms  192.168.1.13
  14   2 ms     2 ms     2 ms  192.168.1.14
  15   2 ms     2 ms     2 ms  192.168.1.15
  16   2 ms     2 ms     2 ms  192.168.1.16
  17   2 ms     2 ms     2 ms  192.168.1.17
  18   2 ms     2 ms     2 ms  192.168.1.18
  19   2 ms     2 ms     2 ms  192.168.1.19
  20   2 ms     2 ms     2 ms  192.168.1.20
  21   2 ms     2 ms     2 ms  192.168.1.21
  22   2 ms     2 ms     2 ms  192.168.1.22
  23   2 ms     2 ms     2 ms  192.168.1.23
  24   2 ms     2 ms     2 ms  192.168.1.24
  25   2 ms     2 ms     2 ms  192.168.1.25
  26   2 ms     2 ms     2 ms  192.168.1.26
  27   2 ms     2 ms     2 ms  192.168.1.27
  28   2 ms     2 ms     2 ms  192.168.1.28
  29   2 ms     2 ms     2 ms  192.168.1.29
  30   2 ms     2 ms     2 ms  192.168.1.30

4. netstat

功能：显示当前活跃的网络连接。

使用方法：在cmd中输入netstat -an，按回车键。

示例：

”` C:\Windows\system32>netstat -an

Active Connections

Protocol Local Address Foreign Address State PID TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 4 TCP 0.0.0.0:443 0.0.0.0:0 LISTENING 4 TCP 192.168.1.100:49152 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49154 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49156 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49158 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49160 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49162 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49164 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49166 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49168 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49170 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49172 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49174 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49176 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49178 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49180 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49182 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49184 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49186 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49188 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49190 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49192 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49194 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49196 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49198 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49200 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49202 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49204 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49206 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49208 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49210 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49212 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49214 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49216 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49218 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49220 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49222 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49224 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49226 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49228 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49230 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49232 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49234 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49236 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49238 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49240 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49242 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49244 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49246 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49248 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49250 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49252 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49254 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49256 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49258 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49260 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49262 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49264 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49266 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49268 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49270 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49272 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49274 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49276 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49278 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49280 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49282 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49284 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49286 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49288 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49290 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49292 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49294 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49296 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49298 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49300 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49302 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49304 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49306 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49308 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49310 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49312 192.168.1.1:80 ESTABLISHED 8 TCP 192.168.1.100:49314 192.168.1.1:80 ESTABL