How to open an a4tech n-400 mouse?

In Mouse Properties you can select single or double-click for opening files. This may resolve the issue. If your touchpad has a separate properties/adjustment window you will see the same options there. Select double-click.

Hello, if the mouse is double clicking randomly means the mouse button or button soldering are broken, maybe you might want to try opening it up and resoldering the mouse button, if it doesn't work you can use an old mouse button that fits the space and solder that one in the mouse that's having problems, reassemble and see if it works, the good news is that most of the time it does.

You may not be double clicking fast enough. In the Windows System Control Panel, there is a Mouse Settings control panel. You can adjust the double click rate in the Mouse Settings control panel.

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I believe the switch inside the left mouse button has worn out or broken that made you think after pressing 4 times you were able to trigger the switch and make the mouse to work. You may open your mouse carefully to see if this is the case. If not please follow the below steps as you might need to configure the mouse double click speed.
Open control panel>Double click on the mouse icon>Button Tab>Double Click section>Adjust your double click speed.

Hello Friend,
Try this

• Go to Control Panel
• Open Mouse
• In Button Tab
• Adjust 'Double Click Speed' to Middle Point
• Click Apply and OK
• You are Done

Just Restart PC...Hope This HELPED you...Thanks for Contacting FixYa....

To modify the mouse settings, open the property sheet using Start > Control Panel > Printers and Other Hardware > Mouse and select the Buttons tab as shown below. Check boxes and sliders allow the necessary modifications to be performed.
There is even a Click Lock function that is very handy for those that have trouble holding down the mouse button while using the drag and drop function.
The button configuration and Double-click speed settings must be set properly. Then it can solve your double-click problem.

To obtain your drivers software for this particular device do the following.

Step 1. Go to the A4Tech website and click on Wired Mouse on the left side of the page.

Step 2. Click on Optical Mouse.

Step 3. Click Next until you find MOP-35 image. Click on the image.

Step 4. Click on the Download Driver tab.

Step 5. Click on the Driver for PC button, and this will prompt you to download the driver software in the .zip format.

Step 6. Extract the .zip file onto your desktop.

Step 7. Open the extracted files and double-click on the Setup Program. This program will walk you through installing the driver files and software. Once completed, you may be prompted to restart your computer.

Step 8. Connect your mouse to your computer.

yes......!!!!

On Mouse Property, try faster on 'Double click speed'

You need to go into the control panel and choose the mouse icon.
From there you can set the double-click speed. They give you a little box to click to calibrate the click speed.