There is no wifi in the company, so we can only use the wireless network card of the laptop to share the network with the mobile phone.
I have been using 360's free wifi before. After dealing with the blue screen problem, sharing wifi has always failed. I have changed a few other tools. It is not enough to use the functions that come with win7, and the way to type commands under DOS still does not work.
Later, I thought about whether it was a problem with the network card driver, and then various driver wizards drove life. I tried many versions of the driver on the official website of the network card on the official website of the computer, but it still failed.
It was possible to deal with the blue screen before. It seems to be related to the problem of dealing with the blue screen. Then, I recalled the process of dealing with the blue screen. I found that the C:\Windows\System32\drivers\vwififlt.sys file was deleted before, and it was good to restore it.
The best recovery method is to have a backup before, if not, you can reinstall the system, but the cost is too high, I used the 360 system first aid kit to restore.
Run the first aid kit, select the repair system file function on the right, scan and repair without results, select manual repair, enter "vwififlt.