Almost everyone on the computer uses the left mouse button as the primary button. You can use the left button to perform operations such as opening files, folders, drag and drop. When the Left Mouse Button Not Working on Windows 10, you may encounter major problems.
It is always a good idea to start with the most basic repair possible, because sometimes that is it. Getting started with basic repairs can also save you valuable time because they are quick and easy to complete.
The first step is to connect the mouse to another PC and check whether the left button of the mouse is valid. This will check whether it is a hardware or software problem.
No matter how sure you are that the mouse is properly connected, you should double-check to make sure it is correct. Check whether the USB flash drive of the mouse is fully inserted; if it is, try inserting it into another USB port. Don’t forget the most important tip: restart your computer.
Possible Corrupted User Profile
If you share your computer with someone, ask if other users have the same problem. If they don’t have the same problem, then their user profile is corrupted, but if other users have confirmed the same problem, then you are seeing a system-wide problem.
To rule out this possibility, you must create a temporary account to see if the left mouse button works. To create this account, right-click the Start menu and then click Settings. Using the arrow keys, go to “Accounts” and press Enter.
Press the Tab key and a black rectangle will appear at the “Your Information” option. Use the down arrow key to go to “Family and Others” and press Enter to access. Press the Tab key as many times as necessary until the black rectangle appears in the “Add others to this computer” option.
You must enter the name and login information for the new user. After adding the information, log into the new account and try the button on the left. You can try to repair the corrupted configuration file or you can transfer the data to a new account.
The subsequent steps have to be done from the unused/spare account. Press the Win + E keys to open the file explorer. You need to be able to see the protected OS files and hidden folders/files. If they are nowhere in sight, go to “View -> Options -> change folder and search options -> view.”
Under the Advanced settings section, click on the “Show hidden files, folders, and drivers” option. Click Apply, followed by OK. Go to “C:\Users\[Corrupted Username],” and choose all the files you see, but don’t touch the following files: Ntuser.dat.log, Ntuser.dat, and Ntuser.ini.
The files you just copied need to be pasted to “C:\Users\[New Username].” Log out of the replacement account and log in to the new account. Make sure everything is working properly and don’t forget to delete the damaged backup account.
Reinstall the Mouse Drivers
The mouse driver may also be corrupted or out of date. A possible solution to this problem is to reinstall or update the driver for the mouse that you are using.
Press Win + X keys and then right click Device Manager. Right-click on the “Mice and other pointing devices” option near the center. Open “Properties”, go to the “Driver” tab and click the “Uninstall device” button.
Follow the on-screen options to completely uninstall the driver. Unplug and reinsert the mouse and install the driver again.
The DISM tool is another possible way to solve the problem of the left mouse button. To run it, you need to run the command prompt, but make sure to run it as an administrator. Open the command prompt by searching in the search box.
Once it’s open, enter the following command:
This process takes a while, so now is a good time to have that cup of coffee. If you feel like too much time has passed, stay away from the window, it will be completed sooner or later.
Revise Mouse Properties
To do this, go to “Settings -> Devices -> Mouse -> Additional mouse options.” The mouse properties will open. Go to the Button tab, and make sure the “Turn on Click Lock” option is checked. If you’re on your laptop, you can use the trackpad to check the box. Don’t forget to select Apply.
Hopefully, one of the methods mentioned has worked for you and fixed Left Mouse Button Not Working. Which option are you going to try first?