Cause analysis and solution for Win7 Bluetooth driver installation failure

Bluetooth is a kind of radio technology that supports short distance communication of devices, now both mobile phones and computers have been widely used in Bluetooth function. If the Win7 system computer does not have Bluetooth driver installed, it needs to be installed before it can be used. Recently, a user installed a Bluetooth driver, found that the installation failed. What do we do? How to solve this problem? Let's talk about it now. The cause analysis and solution of WIN7 Bluetooth driver installation failure.

The steps are as follows:

First, the reason analysis:

The optimization software mistakenly deletes the system Inf folder with its own file.

Second, the solution:

1, into the C disk system partition Windowsinf directory, to see if there is a "bth.inf" file, note: If the C disk--windows--inf--"Bth.inf" only show bth, not found. inf suffix, clickable "Tools-Folder Options-View- -Uncheck the "Hide extensions for known file types"--OK.

2, if still not, find the C disk--windows--system32--driverstore--filerepository-find and open the bth. Inf folder (for example: BTH. INF_AMD64_NEUTRAL_ALE8F56D586EC10B) to confirm the existence of BTH. INF file, will be "bth. INF file is copied to the C:windowsinf directory.

3, the Computer icon right click on the "Management--Device Manager", uninstall the yellow exclamation mark unknown device, Bluetooth driver to reinstall.