Hi Gaurang,

Dell Inspiron 15 3521 is tested with Windows 7 64bit and Windows 8 64bit operating system and we have drivers available for these version of Windows online. Please share the screenshot of the Device Manager with other devices expanded. Here are the steps:

• Press the key combination Windows Logo key + R key to open Run dialog box.
• Type in devmgmt.msc and click OK.
• The Device Manager windows will appear.
• Click on the sign next to Other Devices and expand it.

Also, share the Hardware Ids of the device which has a bang in the Device Manager, this will assist me to identify device and its drivers. Here are the steps:

• Open Device Manager.
• Select your device and right click on it.
• Click Properties from the drop down list.
• Click Details and then click Device description button to select Hardware Ids.
• Share the Hardware Ids mentioned under Value.

I request you to remove the service tag from public view for security reasons. Please reply with the information. Will take it further from there.

Hi Gaurang,

Thank you for sharing the information. It appears that the Chipset drivers are missing. Please download and install the following set of drivers and share the results:

Intel Chipset Driver: http://dell.to/11hpEgS

Realtek Card Reader Driver: http://dell.to/10PS5ab

Intel USB 3.0 eXtensible Host Controller Driver: http://dell.to/12shrxT

Hope this helps. Please reply if you have any questions.