我的 PC 出了问题。我有一个由 ISP 提供的无线路由器/调制解调器组合盒，但我网络上的一台 PC 出现了问题。
PC 通过 WIFI 连接，经常会出现严重的数据包丢失和非常高的 ping 值。我网络上的其他设备都很好。我有一台 Apple TV、几台 iPad/手机和几台笔记本电脑。我的主要台式电脑是无线连接的。
如果我不使用 PC，网络就没问题。但是有时当我打开 PC 时，会导致数据包丢失（50%）或更高，并且经常导致整个网络在一段时间内出现故障。有时似乎重新启动可以暂时解决问题，或者禁用并重新启用网卡。（http://www.amazon.com/gp/product/B009VKON0S?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s01）
我很难诊断出是什么原因导致了这样的问题。我是网络新手，但了解基本术语。感谢您提供的任何帮助！
下面是对 Google 进行 ping 测试的一个例子：
Pinging 8.8.8.8 with 32 bytes of data:
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Reply from 8.8.8.8: bytes=32 time=528ms TTL=56
Reply from 8.8.8.8: bytes=32 time=2044ms TTL=56
Reply from 8.8.8.8: bytes=32 time=261ms TTL=56
Reply from 8.8.8.8: bytes=32 time=15ms TTL=56
Request timed out.
Reply from 8.8.8.8: bytes=32 time=3481ms TTL=56
Reply from 8.8.8.8: bytes=32 time=1444ms TTL=56
Reply from 8.8.8.8: bytes=32 time=2643ms TTL=56
Reply from 8.8.8.8: bytes=32 time=2723ms TTL=56
Reply from 8.8.8.8: bytes=32 time=40ms TTL=56
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 8.8.8.8: bytes=32 time=20ms TTL=56
Reply from 8.8.8.8: bytes=32 time=17ms TTL=56
Reply from 8.8.8.8: bytes=32 time=20ms TTL=56
Reply from 8.8.8.8: bytes=32 time=18ms TTL=56
Reply from 8.8.8.8: bytes=32 time=32ms TTL=56
Reply from 8.8.8.8: bytes=32 time=14ms TTL=56
Reply from 8.8.8.8: bytes=32 time=17ms TTL=56
Reply from 8.8.8.8: bytes=32 time=20ms TTL=56
Reply from 8.8.8.8: bytes=32 time=16ms TTL=56
Reply from 8.8.8.8: bytes=32 time=2007ms TTL=56
Request timed out.
Reply from 8.8.8.8: bytes=32 time=3362ms TTL=56
Reply from 8.8.8.8: bytes=32 time=116ms TTL=56
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Reply from 192.168.0.50: Destination host unreachable.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 8.8.8.8: bytes=32 time=409ms TTL=56
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 8.8.8.8: bytes=32 time=2127ms TTL=56
Reply from 8.8.8.8: bytes=32 time=2682ms TTL=56
Request timed out.
Request timed out.
Request timed out.
Reply from 8.8.8.8: bytes=32 time=2349ms TTL=56
Reply from 8.8.8.8: bytes=32 time=26ms TTL=56
Reply from 8.8.8.8: bytes=32 time=16ms TTL=56
Reply from 8.8.8.8: bytes=32 time=35ms TTL=56
Reply from 8.8.8.8: bytes=32 time=76ms TTL=56
Reply from 8.8.8.8: bytes=32 time=128ms TTL=56
Reply from 8.8.8.8: bytes=32 time=83ms TTL=56
Reply from 8.8.8.8: bytes=32 time=15ms TTL=57
Reply from 8.8.8.8: bytes=32 time=17ms TTL=56
Reply from 8.8.8.8: bytes=32 time=87ms TTL=56
Reply from 8.8.8.8: bytes=32 time=84ms TTL=56
Reply from 8.8.8.8: bytes=32 time=25ms TTL=56
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Ping statistics for 8.8.8.8:
Packets: Sent = 100, Received = 47, Lost = 53 (53% loss),
Approximate round trip times in milli-seconds:
Minimum = 14ms, Maximum = 3481ms, Average = 749ms
===Ping Test Done===
Press any key to continue . . .
和路由器本身的时间段相同：
Pinging 192.168.0.1 with 32 bytes of data:
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Reply from 192.168.0.1: bytes=32 time=3494ms TTL=64
Reply from 192.168.0.1: bytes=32 time=45ms TTL=64
Reply from 192.168.0.1: bytes=32 time=1673ms TTL=64
Reply from 192.168.0.1: bytes=32 time=136ms TTL=64
Reply from 192.168.0.1: bytes=32 time=2ms TTL=64
Request timed out.
Reply from 192.168.0.1: bytes=32 time=3475ms TTL=64
Reply from 192.168.0.1: bytes=32 time=1449ms TTL=64
Reply from 192.168.0.1: bytes=32 time=3ms TTL=64
Reply from 192.168.0.1: bytes=32 time=1696ms TTL=64
Reply from 192.168.0.1: bytes=32 time=2672ms TTL=64
Reply from 192.168.0.1: bytes=32 time=36ms TTL=64
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.0.1: bytes=32 time=4ms TTL=64
Reply from 192.168.0.1: bytes=32 time=3ms TTL=64
Reply from 192.168.0.1: bytes=32 time=2ms TTL=64
Reply from 192.168.0.1: bytes=32 time=5ms TTL=64
Reply from 192.168.0.1: bytes=32 time=7ms TTL=64
Reply from 192.168.0.1: bytes=32 time=2ms TTL=64
Reply from 192.168.0.1: bytes=32 time=4ms TTL=64
Reply from 192.168.0.1: bytes=32 time=2ms TTL=64
Reply from 192.168.0.1: bytes=32 time=2ms TTL=64
Reply from 192.168.0.1: bytes=32 time=2006ms TTL=64
Request timed out.
Reply from 192.168.0.1: bytes=32 time=3351ms TTL=64
Reply from 192.168.0.1: bytes=32 time=123ms TTL=64
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.0.50: Destination host unreachable.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.0.1: bytes=32 time=408ms TTL=64
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.0.1: bytes=32 time=2126ms TTL=64
Reply from 192.168.0.1: bytes=32 time=44ms TTL=64
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.0.1: bytes=32 time=3788ms TTL=64
Reply from 192.168.0.1: bytes=32 time=83ms TTL=64
Reply from 192.168.0.1: bytes=32 time=6ms TTL=64
Reply from 192.168.0.1: bytes=32 time=48ms TTL=64
Reply from 192.168.0.1: bytes=32 time=38ms TTL=64
Reply from 192.168.0.1: bytes=32 time=85ms TTL=64
Reply from 192.168.0.1: bytes=32 time=93ms TTL=64
Reply from 192.168.0.1: bytes=32 time=1ms TTL=64
Reply from 192.168.0.1: bytes=32 time=1ms TTL=64
Reply from 192.168.0.1: bytes=32 time=3ms TTL=64
Reply from 192.168.0.1: bytes=32 time=124ms TTL=64
Reply from 192.168.0.1: bytes=32 time=63ms TTL=64
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.0.1: bytes=32 time=1820ms TTL=64
Request timed out.
Reply from 192.168.0.1: bytes=32 time=249ms TTL=64
Reply from 192.168.0.1: bytes=32 time=3ms TTL=64
Reply from 192.168.0.1: bytes=32 time=1ms TTL=64
Ping statistics for 192.168.0.1:
Packets: Sent = 100, Received = 48, Lost = 52 (52% loss),
Approximate round trip times in milli-seconds:
Minimum = 1ms, Maximum = 3788ms, Average = 694ms
===Ping Test Done===
Press any key to continue . . .
答案1
您可能会遇到“ping 泛滥”的情况。如果您一直在下载程序，则有可能您下载了一个损坏的文件。您的笔记本电脑可能在 Windows 程序文件中隐藏了恶意代码，大多数反间谍软件或恶意软件程序都会错过这些代码。我假设您正在运行 Windows，因此请尝试此方法，看看它是否能清理您的系统。这是一个免费的 Microsoft 程序，安全无添加垃圾（http://www.microsoft.com/en-us/download/virus-malware.aspx?q=virus）还要检查防火墙设置和打开的端口。您可以从多个站点跟踪 IP 地址，以查看笔记本电脑上的 Web 浏览器或程序是否触发端口变为活动状态，从而导致不必要的行为。这是 Windows 中另一个用于监视端口和在线活动的工具。（https://technet.microsoft.com/en-us/library/bb897437.aspx）