Dell Wireless 1704 WiFi Driver won't install properly on Windows 10

I am using an Inspiron 7520 (mid 2010) laptop and have recently upgraded to Windows 10. My WiFi doesn't work properly, it will work for sometime after a restart and then it starts saying that the connection is limited while there are no issues on any other devices connected to the same WiFi. I uninstalled all network drivers from Device Manager and tried installing "Dell Wireless 1704 WiFi Driver". After installation new drivers do appear in the Network section of Device Manager but the installer says "The update installer operation is unsuccessful." and the problem persists. I am pasting the installation log below. Please help, this is very annoying.

[08/08/15 13:26:33] Update Package Execution Started
[08/08/15 13:26:33] Original command line: "C:\Users\amogh\Downloads\Network_Driver_6R11G_WN32_7.35.267.0_A00 (1).EXE"
[08/08/15 13:26:33] DUP Framework EXE Version: 3.3.1.70
[08/08/15 13:26:33] DUP Release: 6R11GA00
[08/08/15 13:26:33] Intializing framework...
[08/08/15 13:26:33] logo.png
[08/08/15 13:26:53] User Command: attended
[08/08/15 13:26:53] DUP Capabilities Value: 35651583 (0x21FFFFF)
[08/08/15 13:26:53] DUP Vendor Software Version: 7.35.267.0
[08/08/15 13:26:53] Local System/Model Compatible with this Package? Yes
[08/08/15 13:26:53] Local System OS Version: 10.0.0.0
[08/08/15 13:26:53] OS Compatible with this Package? Yes
[08/08/15 13:26:53] Local System OS Language: EN
[08/08/15 13:26:53] Language Compatible with this Package? Yes
[08/08/15 13:26:53] Extraction-miniunz path: C:\PROGRA~3\dell\drivers\NETWOR~1.0_A\miniunz.exe
[08/08/15 13:26:53] Extraction-arguments:  -x C:\Users\amogh\DOWNLO~1\NETWOR~3.EXE -o -d C:\PROGRA~3\dell\drivers\NETWOR~1.0_A
[08/08/15 13:26:57] Extraction-GetExitCode: 0
[08/08/15 13:26:57] Identified Behavior : attended
[08/08/15 13:26:57] Temporary payload log file name: C:\ProgramData\dell\drivers\Network_Driver_6R11G_WN32_7.35.267.0_A00 (1)\DUP481C.tmp
[08/08/15 13:26:57] Translated Command Line : setup.exe "/vLOGFILE="C:\ProgramData\dell\drivers\Network_Driver_6R11G_WN32_7.35.267.0_A00 (1)\DUP481C.tmp""
[08/08/15 13:26:57] Path : C:\ProgramData\dell\drivers\Network_Driver_6R11G_WN32_7.35.267.0_A00 (1)
[08/08/15 13:26:57] Identified Behavior : attended
[08/08/15 13:27:08] Append Vendor Software Log: C:\ProgramData\dell\drivers\Network_Driver_6R11G_WN32_7.35.267.0_A00 (1)\DUP481C.tmp
[08/08/15 13:27:08] 
--- Start of Vendor Software Log ---

[08/08/15 13:27:08] ASCII payload log file detected.
[08/08/15 13:27:08] Installation log file for "DW WLAN Card".
=====================================================
Log Starts on Date: 8-8-2015 Time: 13:27:06
=====================================================
13:27:06: GetOSInfo(): Detected Windows 10
13:27:06: GetOSInfo(): Product Type: Home Premium
13:27:06: PreInstallSetup(): Using ini file: 'C:\Users\amogh\AppData\Local\Temp\{2A68E9CB-1E1B-4240-9593-3321F521E4F8}\{F16DD1B4-4933-4019-BC07-A9BF18830338}\bcmwls.ini'
13:27:06: Using inf file: 'C:\Users\amogh\AppData\Local\Temp\BcmWLSetup\Drivers\WinThresh\WL\bcmwdi.inf'
13:27:06: Installation root: 'C:\Program Files\Dell\DW WLAN Card'
13:27:06: OEM is Dell
13:27:06: Driver interface is PCI
13:27:07: HW detection for installer
13:27:07: ResultCode=118
13:27:07: Hardware id is not found in driver inf. Either the device is not present or the device is not supported.
13:27:07: InstallShield script aborting.
13:27:07: Entering function CreateEventLog()
13:27:07: Exiting function CreateEventLog()
=====================================================
Log ends on Date: 8-8-2015 Time: 13:27:07
=====================================================

[08/08/15 13:27:08] 
--- End of Vendor Software Log ---

[08/08/15 13:27:08] Vendor Software Return Code: 118
[08/08/15 13:27:09] logo.png
[08/08/15 13:27:09] Name of Exit Code: ERROR
[08/08/15 13:27:09] Exit Code set to: 1 (0x1)
[08/08/15 13:27:09] Result: FAILURE
[08/08/15 13:29:30] Open file: C:\ProgramData\Dell\UpdatePackage\Log\Network_Driver_6R11G_WN32_7.35.267.0_A00 (1).txt