What do I do with the Win7 Device Manager driver displaying a yellow exclamation mark?

We know that the Win7 flagship system download the driver is very important, they are the hardware of the computer, is part of the computer, if there is any failure, will directly cause some of the computer functions can not be used normally. For example, we are more familiar with the sound card driver, if the sound card driver failure, will cause the computer can not be audible, then such as video files, such as the normal use of things, as well as network card driver, if the network card driver failure, then our computer can not connect the network, of course, in addition to the graphics and other drivers, is also very important. So today, small series to introduce, Win7 flagship Device Manager CD-ROM if there is a yellow exclamation, how do we deal with it?

1. First, we press the Win7 flagship keyboard Win+r shortcut to open the computer's running window, then enter Regedit in the window and click Enter, so you can open the computer's Registry Editor window.

2. In the Open Registry Editor window, in turn, click to expand HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Control Class {in the left menu. 4D36E965-E325-11CE-BFC1-08002BE10318}, next in the right window to find the UpperFilters option and lowerfilters option, we directly right-click on these two, delete them, and then launch the Registry window.