Install webcam online. my webcam is a4tech. the model is PK-635M.

Thank you for posting your question.

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

Step 1. Go to the A4Tech website and click on web camera in the Quick Product Locator section.

Step 2. Select ViewCAM A.

Step 3. Click on the PK-635 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 .rar format.

Step 6. Extract the rar 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 will be prompted to restart your computer.

Step 8. After you have restarted your computer and have logged in, plug the webcam into one of your computer's USB ports on and the device will be recognized and the drivers will be installed.