Ethereum Mining on Windows with Nvidia Graphics Card: Cgminer Issues and Solutions

As a user of Ethereum, you are likely aware of the importance of having reliable mining software that can run smoothly on your system. However, for those who have an Nvidia graphics card, setting up cgminer can be a challenge. In this article, we will explore the issues with cgminer on Windows with Nvidia graphics cards and provide solutions to help you get started.

The Problem:

When attempting to start cgminer on Windows using an Nvidia graphics card, users often encounter errors such as:

• Command not found

• Invalid block number

• Block size mismatch

These errors suggest that the mining software is unable to detect the Nvidia graphics card or is misconfigured, causing the program to fail.

The Solution:

To resolve these issues and successfully start cgminer on Windows with an Nvidia graphics card, try the following steps:

Step 1: Update your system drivers

Before installing the latest mining software, make sure that your Nvidia drivers are up-to-date. You can do this by:

• Click the “Start” button in the bottom left corner of the screen and type “Device Manager”

• Press the Windows key + X and select Device Manager

• Expanding the “Display Adapters” section to view and update your Nvidia driver

Step 2: Install the latest mining software

After updating your drivers, install the latest version of cgminer on your system. This can be done by:

• Download the latest version from the official website (

• Extracting the zip file and running make to build the latest version

• Installing the resulting .exe file

Step 3: Configure cgminer settings

To get cgminer working properly with your Nvidia graphics card, make sure to:

• Set the gpu option in the cgminer.conf file to True

• Use the -g option when running cgminer, specifying the GPU ID (if multiple GPUs are detected) or the GPU name (if you have only one).

• Set the --block-size option to a value that matches your system’s block size (e.g., 256, 512);

Example Configuration:

Here’s an example configuration for cgminer on Windows:

cgminer --scrypt -o  -u usernmae -p mypass --thread-concurrency 8192 -I 10 -g Nvidia0 -w 256

Additional Tips:

• Make sure to run the cgminer command as an administrator to ensure that it has the necessary permissions.

• If you encounter any issues during setup, try restarting your system and running the cgminer command again.

By following these steps and tips, you should be able to successfully set up cgminer on Windows with an Nvidia graphics card. Happy mining!

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