Hello Prudhvi,
Thank you for posting your query in Microsoft Community.
Sorry to know you are facing inconvenience with the web camera not working on the computer. I can understand how frustrating it could be when computer and connected devices don't work as expected.
This issue could be because of the driver for the device is corrupt or needs to be updates.
Please help me with the following information:
- What is the make and model of the web camera?
- Have you made any recent changes to the computer prior to this issue?
- Do you get any error code, if so what is the exact error code?
4. Do you see a yellow exclamation mark in device manager for camera device in device manager?
5. Is the web cam integrated with computer or are you using an external web cam?
6. If you are using external webcam, what is the make and model of the webcam?
Method 1: Try running the Hardware and devices troubleshooter by following steps below:
1. Press “Windows Key + R”, type Control Panel.
2. Then type “Troubleshooter” in the Search box and hit enter.
- Select “Hardware and Sound” from the Troubleshooter Window.
- Select “Hardware and Devices”.
Camera app and webcams help
Refer (If you have problems with your webcam)
http://windows.microsoft.com/en-us/windows-8/camera-app-faq
If you are using a internal webcam, run the Diagnostics for Webcam Issues
Webcam Diagnostics
http://en.community.dell.com/support-forums/laptop/w/laptop/3557.webcam-diagnostics
Also refer to the article:
Using and Troubleshooting the Dell Webcam and Dell Webcam Central Software
http://www.dell.com/support/Article/us/en/04/SLN85507/EN#Troubleshooting-Webcam-Issues
Method 2:
Step 1: I suggest you to visit the computer manufacturer website and install the latest webcam drivers.
http://www.dell.com/support/home/us/en/19/product-support/product/inspiron-15r-5520/drivers
Steps 2: If webcam drivers are not available for Windows 8.1, you can install download Windows 7 driver and install it in compatibility mode. Refer to the help link to install the drivers in compatibility mode.
http://windows.microsoft.com/en-IN/windows-8/older-programs-compatible-version-windows
Hope this information helps, please reply with the status of the issue and the required information for any further assistance.