Quite often, a system may have a conflict when trying to connect some new equipment. One such example is code 45 "The device is not connected to the computer." This article will discuss the causes of this problem, as well as ways to solve it.
Signs of a specific error
Often a message that a particular error has occurred does not appear immediately. A computer may simply not start working as stable as it did before. The following are signs that your device is experiencing this particular error:
- Periodically, it may begin to freeze for a few seconds. This happens for no apparent reason or after you try to connect a second monitor.
- Another sign may be an extremely inhibited reaction of the system to the use of the mouse. Keyboard entry is also difficult.
- General slowdown when running Windows.
- When you try to connect a hardware device, the computer freezes and gives a "Code 45" error. After that, the window of the currently running program closes.
It is worth noting that this phenomenon often occurs when trying to install or run a program developed by Microsoft itself. Also, the code may occur at startup or shutdown of the device. Sometimes the inscription "Error 45" may appear during the installation of the operating system on a new or old computer.
Let us further consider why this happens.
What are the reasons
Due to the complexity of the computer device, it is rather difficult to understand what may cause an error or malfunction. Here are just a few assumptions that can provoke a conflict situation:
- Suppose you decide to update the driver for the printer. However, it turned out that it was damaged or outdated. Therefore, it cannot be installed. It is worth noting that a specific option is the most common among all cases of the message "Now this device is not connected to the computer."
- Another option related to drivers may be a conflict when installing new equipment. The software may have a different bit depth or it is not intended for a specific device model.
- The computer could become infected with a virus that has modified or even damaged any system files and drivers that are associated with them.
- Suppose another technical option. Before connecting a second monitor, you were not convinced of its serviceability. As a result, a message appeared that the device was not connected to the system.
- The most serious issue that may require reinstalling Windows is corrupted operating system registry.
We figured out the possible causes of this error. You can go to the known ways to fix it.
Computer scan
If an error code 45 appears, you must check the device for the possible presence of various malicious software that can damage or modify system files. The scan process can be performed as a standard Windows defender, and any additional programs - antiviruses. As an example, you can use Emsisoft Anti-Malware.
Cleaning obsolete and temporary files and programs
Very often it may happen that programs are installed on the computer that have not been used for a sufficiently long time. To fix this, just do the following:
- Click the "Start" button and go to the "Windows Settings" program.
- Here you need to select the section called "Applications".
- After moving to a new window, simply sort the applications by specific places or by the "All Drives" category.
- In the list that appears, select and remove all unnecessary programs.
This should help resolve the error code 45.
It may also happen that defragmentation occurred while uninstalling any software. As a result, many files ended up in different folders on the disk. This situation greatly complicates their search and elimination.
This problem can be easily fixed if you use the Revo Uninstaller Pro utility. To fix temporary files, do the following:
- After starting the program, click on the "Tools" button (on the top panel of the window).
- In the list that opens, select the line "Cleaner of unnecessary files."
- After switching to a new tab, run the directory selection routine by clicking on the "Scan Folder" button.
- In the new window, select the desired drive and confirm the action.
- In the list that appears, click the "Delete" button. It is located in a small box above the tabs.
Driver update
As mentioned earlier, the occurrence of error code 45 can be caused by outdated or damaged drivers. In this case, you must make sure that the devices connected to the computer have the latest versions of this software. There are two ways to upgrade. The first is done through Windows itself:
- Enter the name "Control Panel" in the search bar and select the standard application.
- In the window that opens, find the "Device Manager" section.
- After going into it, a list of all devices and disks that are connected to your computer will open.
- To update the driver, just right-click on the device icon. In the list that appears, select the appropriate section.
The second option. Suppose you want to update the driver for the printer. To do this, follow these steps:
- In the browser, go to the site of the manufacturer of your equipment.
- Find the section for updating drivers.
- Among the list of devices available for updating, find yours.
Rollback to the previous version
If an error occurs with code 45, it is worth trying to roll back the operating system to a previous version of Windows, which stood before the update. Thanks to this, the computer will have the opportunity to return back all the changes that entailed the appearance of this error. To complete this task, you must do the following:
- Launch the Start menu and go to the Windows Settings program.
- In the opened window with the settings, find the section called "Update and Security" and go into it.
- In the list on the left, select "Recovery."
- After that, you will be asked to enter a password.
- After confirming that you are the owner of the device, the rollback process will start. To do this, simply follow the instructions.
When the system returns to the previous version of updates, your files will not be deleted. This action will simply return the system files to their previous state.
Reverse action
You can try to do a little differently. Instead of rolling back the system to a previous version, you need to install all available updates of the current operating system. However, this can only be done if you have not yet installed the latest version. To check if it is possible to install, do the following:
- Launch the Start menu and go back to the Windows Settings program.
- Here, open the section called "Update and Security."
- You will automatically open the "Update Center" section.
- In the main field, select the "Advanced options" line.
- In a new window, check if you have the function of receiving updates enabled. If not, turn it on and return to the previous section.
- Click on the button to check for updates and install them, if any.
Hard disk check
Another way to resolve the error code 45 can be to check the hard disk for errors or malware. To perform this check, you must follow the following instructions:
- Launch the Start menu and enter the phrase “Command” in the search bar.
- While holding down the Ctrl and Shift keys, press the Enter key. A new dialog box opens.
- Here it is necessary to confirm the selection by pressing the "Yes" key. The console window starts up.
- Enter "chkdsk / f" here and confirm the action with the enter key. After that, the process of scanning the hard drive will start and search for all possible damage.
- After that, follow the instructions that appear on the monitor screen.
Checking RAM (RAM)
Errors or malfunctions in the memory can also cause an error 45. It should be noted that almost ten percent of all errors that occur during Windows operation are associated with RAM damage. If memory bars were recently purchased, a simple check is recommended:
- Remove them from the system unit. Return the old ones (if they exist and work) or start the system without RAM. BIOS will start to give signals, but there is nothing to worry about. He reports that the RAM was not found.
- After starting the system, check if an error occurs again. If so, then you should try one of the methods above. If it does not exist, you can return the new memory bars that you removed.
It is also worth referring to special software that will check the operability of RAM and the presence of damage. Among such utilities, Memtest86 can be noted. If the program detects malfunctions in the RAM, care must be taken to replace the faulty part of the system.
From scratch
If none of the above methods helped to solve the problem, you just have to remove the current operating system and install Windows again. To avoid data loss, it is necessary to make backup copies of all files and documents that are on the computer.
If the reinstallation of the operating system did not help to fix the error 45, you should pay attention to the hardware of the system unit. If possible, check by replacing the parts one at a time to determine which one causes the device to fail to connect.