wireless adapter not available

i am using dell n5110 laptop , three days before i changed 32bit to 64bit after that i cant use wifi so i checked network adapters but there is no wireless network adapter and i also checked in services also there also wlan service also not available, i checked by cmd also there there is no network interface it saysss pls help me....

See if you can restore WLAN AutoConfig service - Services - Restore Default Services in Windows 7.

Also try running cmd as admin:

Code:

sfc /scannow

when i try to install my wifi driver i cant do it,a report is produced vat the end i attached the report below pls help me.

Code:

[08/30/15 08:18:27] (FileUtility::DeleteDirectoryTree): *** DeleteFile() has reported failure.  The error message reported by the system is:  Access is denied.

This is the error message, try running the exe as administrator.

WLAN AutoConfig should be in services though, so see my previous post also.