Reasons for not being able to search for wireless signals after reinstalling Win7 system and countermeasures

            The first situation: It is possible that we forgot to upgrade the wireless driver in the computer system when reinstalling the computer system. Without the support of the wireless driver, our computer naturally cannot access the Internet.
Response measures: download a driver wizard, one-click detection, and then install the missing network card driver, or we can directly download the network card driver from the brand's official website, and then install it.
Case 2: It is possible that our computer has a switch with unlimited network programs. We have not turned this switch on, so the unlimited network cannot be used.
Should be more measures: In general, there is such a shortcut key in the computer, such as FN+XX key, which needs to go to Baidu according to the computer brand.