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System File Checker can't replace bad files
My friend's Win7 Home laptop can connect to their wifi network, but when I brought it to my house it can't connect to my wifi network. The laptop connects fine via Ethernet.
Further: nothing happens when I mouse over the Network icon in the system tray (when the laptop is at my house - I'm not sure what happens mousing over the icon on his network).
As if that weren't enough , when I go into the Manage Wireless Networks screen, nothing is there - nothing - no devices are listed. Normally at least a LAN and Wireless item are listed there.
There is no indication of anything wrong in Device Manager.
So I ran System File Checker and it found two bad files (autochk.exe and wlanmm.dll), but it also said that the source file was corrupted for each of them. I've attached the relevant entries from the sfcdetails.txt file that was generated.
The confusing part is, in the log file entries it says that the source file is corrupt, but at the end it then says "Verify and Repair Transaction completed. All files and registry keys listed in this transaction have been successfully repaired"
I'd appreciate any help you can offer. I'll be glad to provide any info you need to help me out.