Hi asr12,

I would suggest you to uninstall the wireless and Bluetooth drivers and reinstall them. You may follow the steps below:

• Press ‘Windows’ key + R on ‘Desktop’ screen
• Type ‘devmgmt.msc’ in run box and press ‘Enter’
• Click > sign next to ’Mice and Other pointing Device’
• Right click the entry listed under  ‘Mice and Other pointing Device’ and click ‘Uninstall’
• Click ‘Yes’ on the security warning
• Click > sign next to ‘Network Adapters’
• Right click on wireless card option and click ‘Uninstall’.

To reinstall the drivers, you may refer to the links below:

• Touchpad: http://dell.to/12g6xVj
• Wireless: http://dell.to/ZZtBHb

Click ‘Download File’ and follow the on screen instructions. Restart the system after re-installing the drivers.

Hope this helps. Please reply with the findings. 

Hi,

Followed the above steps. Problem with the wireless card still exists.

Try Disabling the Auto Tuning Feature. Steps are Listed below

Step #1 : Win +R-> Search->CMD & Click on APPS ICON ->Right Click on Command Prompt and Select Run As Administrator)

Step #2 : netsh interface tcp show global [Press ENTER KEY]. You should see Recieve Window Auto-Tuning Level : Normal

Step #3 : netsh interface tcp set global autotuning=disabled [Press ENTER KEY]. You will recieve prompt as OK

Step #4 : netsh interface tcp show global [Press ENTER KEY]. You should see Recieve Window Auto-Tuning Level : Disabled.

Step #5 : Type EXIT and Press ENTER KEY.

Step #6 : Re-start your System and check if the Wi-Fi is gettng disconnected frequently.

Let me know  if the problem is fixed.

Hi asr12,

You may change the settings for Dell 1704 wireless card:

• Open Device Manager
• Expand Network Adapters, right click the wireless card and choose Properties
• Click the Advanced tab
• Disable 802.11b Preamble to Long
• Change Receive Buffers to 300
• Change Transmit Buffers to 500

Hope this helps. Please reply with the findings.

Sorry, I could not find any of the options you mentioned under the Advanced tab. Confirming once again, it's a Inspiron 3520 with Win 8, Dell 1704 802.11b/g/n (24.GHz) card. Looked under 'Device Manager' -> right click on Dell 1704 wireless card -> 'Properties' -> 'Advanced'.

Hi asr12,

Please share the options you are getting in 'Device Manager' -> Dell 1704 wireless card -> 'Properties' -> 'Advanced'. Paste a screenshot, if possible.

Keep me posted with the information. I will be glad to assist further.

Options under  'Device Manager' -> Dell 1704 wireless card -> 'Properties' -> 'Advanced':

- 802.11h+d

- Antenna Diversity

- AP Compatibility Mode

- Bandwidth Capability

- Bluetooth Collaboration

- BSS Mode

- BT-AMP

- Fragmentation Threshold

- IBSS 54g(tm) Protection Mode

- IBSS Mode

- Locally Administered MAC Address

- Minimum Power Consumption

- PLCP Header

- Priority & VLAN

- Rate (802.11b/g)

- Roam Tendency

- RTS Threshold

- WMM

- WZC IBSS Channel Number

- Xpress (TM) Technology

Did as you suggested but that hasn't worked either.

Hello DELL,

I was looking forward to a solution to this problem. Any updates?

Hi asr12,

You may try changing the ‘Value’ of 'Locally Administered MAC Address' to 1234567890AB. This should take care of the wireless issue.

Keep me posted with the results. I will be glad to assist further.