Desktop computers often disconnect, which is very annoying. There are many reasons for this, including incorrect network settings, hardware failure, or virus infection. This article is brought to you by php editor Xinyi, who will discuss in detail the reasons and solutions for desktop computers to go offline. Continue reading below to learn how to diagnose and resolve this common problem.
It is recommended to add more descriptions to save everyone’s time and judgment
Since it is frequently disconnected, try to reproduce the fault and use troubleshooting methods to determine the source of the fault
First of all, the connection between the Internet and the computer The process close to the user end is mainly: (home fiber optic)→cat→network cable (→router→network cable)→computer
Since you pointed out that the desktop computer is offline, then by default other devices such as mobile phones and laptops will not have this happen Condition. Then we can rule out previous hardware problems with the router. In other words, if it is a hardware problem, it will occur in the network cable connected to the computer or one of the computer network cards. This can be eliminated by changing the network cable. Of course, it is also possible that the routing or motherboard network port is not in good contact. This can be solved by changing the lan port.
At the software level, drivers, systems, viruses, and software settings are all possible
Others, the operator may have some problems such as network fluctuations
The main reason why the computer goes offline is that the network is unstable, the signal is not strong, or the power supply of the router and network card is unstable.
1. The local connection may be unstable
Check whether the network cable connecting the computer and router is intact and whether it is loose or damaged. Replug or replace the network cable to see if the network is still disconnected frequently.
2. Network settings problem
Right-click "This Computer", select "Manage", click "Device Manager", find the "Network Adapter" option and open it, select the network card used, right-click and select "Properties". Click the "Advanced" tab, click "Connection Speed and Duplex Mode", change the value to "10Mbps Half-Duplex", restart the computer and check whether the network is still disconnected.
3. The network card driver has not been upgraded
Open the device manager, find the network card, right-click and select "Update Driver".
4. The computer automatically disconnects from the Internet after hibernation
Open the device manager, find the network card, right-click and select "Properties", click the "Power Management" tab, and uncheck "Allow the computer to turn off this device to save power" , click "OK".
If none of the above methods can solve the problem, it can only be solved by resetting the network. Click the "Start" menu, click "Settings", click "Network and Internet", select the "Status" option, find "Network Reset" in the list on the right and click it to reset network settings.
Laptops often go offline because there is a problem with the network driver. First, check whether the network is unstable. Secondly, open the network settings on the lower right side of the computer desktop to check the network situation, and then open the driver wizard to upgrade the network driver.
1. Open the start menu and select "Control Panel".
2. Double-click to open "Network Connection".
3. Right-click the wireless network connection, select Properties, and open the wireless network connection property settings.
4. Click Configure to open the wireless network card configuration interface.
5. Select the "Advanced" page, find "Power Management" in the left frame, and select it; uncheck the small check mark in front of "Use Default" on the right; slide the slider below to "Highest Value"; and finally click "Sure".
1. If you are referring to frequent broadband disconnections, it is recommended that you troubleshoot in the following ways: If you are using a router, disconnect the router first and perform a stand-alone dial-up test; if you have a modem device, you need to pay attention to whether the device is overheated. Shut it down for a few minutes and then try restarting it; If the program drops when running alone (for example, if it drops while playing a game), it is recommended to restart the computer and try or reinstall the program; If the entire network goes offline, please check the access cable and network cable If it is loose or has poor contact, try to unplug and plug the line again; check for disconnections caused by filtering computer viruses and perform a full scan. 2. If the problem still cannot be solved after troubleshooting through the above methods, you can contact the local manual customer service to report the problem.
If your computer always drops offline when surfing the Internet, there are many reasons for this. First of all, you have to consider whether it is caused by the external network. If you have installed a router, remove the router and use a modem to connect directly to the computer. If there is no router, then Observe whether the ADSL indicator light of the cat is flashing. If it flashes, it indicates an external network problem. Call the network provider for repair.
如果甩掉路由器不掉线，那就考虑是否路由器问题引起的，恢复路由器的出厂设置，然后重新设置一下看看，还有你下载一个驱动精灵，然后更新一下你的网卡驱动，有时驱动程序不兼容也会引起此类情况，还有网线接触不实都会引起的
几个情况
1.网络状态十分不好(无线网信号弱会有这种情况)
2.ip冲突,网络内使用人数较多,dhcp地址分配重复,更换下检查下ip,换到靠后点的
3.有人恶意攻击,无线网则是截取密码,有线网是中间人劫持,窃取信息,仔细检查下
路由器无线掉线问题常见于以下几种原因：
无线干扰
无线干扰是导致无线应用不稳定的重要因素，一是微波炉、无绳电话，2.4G无线鼠标键盘等电器的强干扰，二是周围其他的无线路由器信号干扰。这些干扰一般会导致无线上网速度变慢，严重时可能会导致无线客户端掉线。推荐解决办法如下：
1、无线路由器摆放位置尽量远离微波炉、无绳电话等强干扰源，尽量使用非2.4G频段的无线鼠标键盘；
2、将无线终端移近路由器使用，保障无线信号的强度；
3、将无线路由器放在客户端数量较多的地方，保证信号强度，对于信号较弱的无线覆盖区域，考虑增加路由器或者AP做强信号覆盖；
4、尝试修改无线路由器的无线信道（尝试1、6、11等信道），固定频段带宽为20MHz，减少与其他无线路由器之间的干扰。
无线终端自身信号较差
无线传输是双向的一个过程，当路由器通过无线将数据传输给终端后，终端也要回复路由器，才能继续后续的传输过程。一般手机的信号强度都会弱于笔记本电脑和无线路由器，所以当手机和路由器之间存在障碍物时，就有可能因为障碍物较多而导致无线路由器接受到终端的无线信号强度较差，从而引起无线掉线的问题。
如果终端的信号强度较差就有可能引起以下两种问题：
1、手机上搜索到无线路由器的信号强度明明很强，但是却上不了网或者无线掉线；
2、手机连接无线路由器频繁掉线，但是笔记本电脑却使用正常。
针对以上两种情况，需要考虑无线终端和无线路由器是否存在较多的障碍物？如果存在较多障碍物就需要增加无线路由器数量，保障频繁掉线区域的无线覆盖效果。
无线终端数量过多
当无线终端带机量超过推荐带机量时，容易出现部分终端连接不上无线信号或者上网比较慢的情况，可以通过无线设置>>无线主机状态确认当前连接路由器的无线主机数量。
如果实际上网的设备超过推荐带机量，则建议更换带机量更高的无线路由器；
如果通过MAC地址确认存在部分“蹭网”设备，则建议通过修改无线密码或者设置无线MAC地址过滤功能，将“蹭网”设备踢出。
部分无线终端占用带宽过大
部分终端占用过高的带宽，导致其他设备上网速度变慢甚至掉线，同样可以通过无线设置>>无线主机状态中的上下行速率确认是否存在占用大量带宽的客户端。
如果存在部分无线客户端占用带宽过高，建议通过终端管理功能限制客户端上网速率。
蹭网设备导致无线不稳定
如果无线网络被蹭网，蹭网者可能利用网络进行P2P下载或者观看在线视频等大流量操作，必然会占用大量带宽，导致网络卡、慢甚至掉线。
部分场景用户会使用别的路由器桥接主路由的无线网络，从而导致无线带机量超过实际推荐值，甚至引入环路的风险性。
为了解决此种情况，建议定时修改无线网络名称和密码。
1►重新安装USB设备的驱动程序修复
1.在电脑设置界面的搜索框输入并打开设备管理器，并展开通用串行总线控制器；
2.右键点击无法正常使用的USB设备图标，然后点击“卸载驱动程序”；
完成后重新启动电脑，连接USB设备，看是否可行。
2►更改USB内存电源管理设置以进行修复
1.同理，打开电脑设置界面，搜索并打开设备管理器；
2.单击以展开通用串行总线控制器；
3.右键单击USB根集线器，然后点击属性；
4.取消选中电源管理，然后点击确定。
完成上述设置后，请重新连接USB设备，看是否还会有这样的问题。
3►使用USB疑难解答进行修复
1.搜索并打开控制面板，可以直接点击电脑开始点击设置，在搜索框输入；
2.在右上方的输入框中输入设备并打开，然后在弹出的页面中点击查看设备和打印机；
3.右键单击USB图标并点击“疑难解答（T）”，这时候再进行检测修复即可。
4►更改USB选择性暂停设置
1.在任务栏搜索框中输入编辑电源计划并打开，也可以在电脑设置搜索框输入；
2.点击更改高级电源设置（C）；
3.在电源选项中，点击USB设置，禁用USB选择性暂停设置，并点击确定。
5►USB的数据丢失怎么恢复
USB的反复断开连接问题解决后，USB可能会出现数据丢失或者损坏的情况。有时候要打开USB设备时会提醒需要格式化才可以打开，但是格式化后，数据可能就没有了。假如你遇到以上的情况可以使用专业的数据恢复软件进行恢复。以下是该软件的操作方法。
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