Often, when performing certain operations with devices connected to the computer, a message appears on our screen about com-port malfunctions. This is due to the peculiarities of the device connection interface.
Necessary
screwdriver
Instructions
Step 1
In order to free the com-port from the devices and equipment connected to it, turn the computer over and find two large connectors on its back wall, through which old models of printers, scanners, telephones and so on are connected. One of them looks a little smaller than the second, but it is also a serial communication port.
Step 2
Remove the screws that hold the cable plug of the device connected to the computer. Gently pull it out of the connector, then your com port will be free to connect new devices to it.
Step 3
If you receive a system message that says a system error related to the use of the com port, check the cable connection, its status, and the installed software. Also check if the drivers are installed on your motherboard.
Step 4
To do this, open the Add / Remove Programs menu in your computer's control panel and find the software you need in the list. If necessary, update it or reinstall it by downloading the updated version from the official website.
Step 5
If a message appears on the screen stating that the com port is occupied by some hardware or software, open the computer properties. In the window that appears, open the tab responsible for the hardware configuration. Click on the device manager and in the list that appears, delete the virtual ports, leaving only the physical ones.
Step 6
Restart your computer. This is possible in cases where the device driver creates new ports on its own without your participation, so they appear on the system as being occupied by the application. Periodically remove them from the manager, this will help you avoid sudden problems in the operation of devices connected via the com port.
