The computer can t connect to the Internet, it seems to be a port problem

It looks like your port is blocked.

Set up in the firewall,Open the operation interface of the firewall in the XP system,This goes to the control panel to find it,Click Exception after opening,And then add the programs you want to run with network links.,Of course, if you know which of your program ports are blocked,You can also add ports directly in the exception.。。。

Of course, the easiest way to do this is to turn off all your firewalls, but this may not be very safe for you when surfing the Internet.

If you have a firewall like Rising, you need to set it up to allow network links... This can be done by right-clicking on the system tray and selecting Network Settings. Find the line of the program and set it to allow.,If you can't find it.,Then turn off the firewall.,That's the easiest.。。。

If you use the company's network, then the problem can be understood, you use the company's network QQ, on MSN. If I were a network administrator, I would have blocked your network port as well. Got it.,Maybe you're taking up too much network resources when you're in the company.,So the network administrator blocked your IP.。。。

It's not your computer's problem. It's the gateway that blocks your network connection requirements, go and talk to the people in your IT department, and let them open it for you from scratch...

Windows 7 system can view the COM port of the computer by following the following steps:

1. Turn on the computer, find "My Computer" on the desktop, right-click the mouse, and find the "Properties" in the list

2. Click to enter the system properties page, and then find "Device Manager" in the hardware options

3. Click to enter the device manager, then find the port on the page, and click the plus sign in front of the port to view the port of the computer in the list:

Hara Sakura's fierce cause: Caused by a system error. Workaround:

Open it first, right-click in the space, and hit the locust open attribute. 2.After entering the interface, select the one in the upper left corner.

3.At this point, you can see in the menu, open the drop-down menu, select the option you want to change, and right-click to open the properties dialog. 4.

In the Open Properties dialog spine box, select , and then click the Copy option. 5.After entering the dialog box, open the com port number in the drop-down menu and enter the com port number into com2 to add a com port number.

If you want to add more than one COM port, just repeat the process. 6.If you want to remove it, first "type regedit in run and press ok to open the registry", or "win+r" to call it and run.

Hello dear, if your computer can't find the com port, it may be due to the following reasons:1The serial port driver is not installed or installed incorrectly; 2.

The serial cable is incorrectly connected or damaged; 3.The serial port is carefully occupied or disabled by Rubber. For the above possible causes, you can try the following solutions:

1.Make sure that the serial port driver has been installed correctly, and check whether the serial port driver is working properly through Device Manager. 2.Check whether the serial port cable is connected correctly, and you can replace it with a new serial port cable for testing; 3.

To check whether the serial port is occupied by other devices, you can use the device manager to check the status of the serial port device, or release serial port resources by shutting down other serial port devices. If you still can't solve the problem after trying the above methods, it is recommended that you contact the computer manufacturer or Xiangliang Jingguan technical support personnel for further troubleshooting and repair.

1.In the case of a router: manually set the IP address of the laptop or desktop to the form of or, the subnet mask is automatic, and the default gateway is filled in with the IP address of the router, which can reduce the router resources occupied by automatic DHCP allocation and speed up the network transmission speed, and it is best to fill in the address of the preferred DNS server to reduce the network response time.

In this way, two computers can access the Internet independently at the same time.

2.If there is no router: only one dial-up ADSL (dial-up computer) can access the Internet, and the other cannot access the Internet without domain name resolution. It is recommended to buy a router, which is less than 100 yuan for wired and about 150 yuan for wireless, which is economical and practical!

In some places, the network of China Unicom cannot use a router, if it is not China Unicom, you can reinstall the network card driver of the computer that cannot go to the network.

Connect two at the same time, let's connect one first. If you don't reinstall the system, hehe.

It may be because the preparation is not properly prepared.

Buy a router and use the router to separate the two wires.

The router is connected but can't connect to the Internet, what should I do, this method is easy to solve.

Do you understand that the line is dialed up, if it is routing?