How to update the graphics driver under Win7

When the video card driver is updated under Win7, if you uninstall the existing graphics driver for the system and then install the latest video driver directly, the system sometimes prompts for installation errors and even causes the new video card driver to not install at all, unless you have Win7 automatically install its own drive, and then use a new driver overlay to install the latest drive. However, this coverage of the installation will not affect the performance of the graphics card, who do not know, but we can find a way to bypass the Win7 verification, direct installation of the new driver pure graphics.

　　Get System Folder Modify permissions

Since the Win7 system automatically backs up a driver file (under the Windowssystem32driverstorefilerepository folder of the system disk), and the default is to install the driver first, if you want to install a new driver, You must first delete the driver files in the directory. In general, however, the default user does not have permission to delete files under this folder, so we should first get permission to operate.

First, right-click the Nv_disp.inf_x86_neutral_0705e2ead80da9c9 folder, select Security-Properties, choose advanced Settings for special permissions, and then select the currently logged-on user to add all file operation permissions. After you have completed this permission, you can successfully delete the files under this folder.

Successful access to full control under this folder

　　Reboot the computer to install the new driver

Users can uninstall the current video card after they have access to the directory's operating rights

Driver. After uninstalling, do not restart the computer immediately, again into the system disk Windowssystem32driverstorefilerepository folder, find Nv_disp.inf_x86_neutral_0705e2ead80da9c9 The video card drives the directory and deletes all the files in the directory.

Then you can reinstall the video driver. The new driver installed will be a new installation, not a previous drive.

Download Install new Driver

　　Risk tip: You can also delete the video related driver files under the System folder

Of course, if the user has a strong hands-on ability, you can also enter the system disk, the "Windows" "System32" folder, found in the relevant files to delete, if it is n card, it is "NV" start, if it is a card, it is "ATI" start. Note that this part of the need to delete more files, in order to prevent the accidental deletion of other system files, there is a relatively simple way to observe the installation date of these files. General graphics driver-related file and system file creation date is different, and WIN7 can easily see the file date, based on the letter at the beginning of the file and the date created, it is easy to distinguish between the driver file and system files.

Then go to the "Windows" "System32" "Drivers" folder, also here to find a file with Nv/ati to delete, where it is best to determine the date of the creation of the file is the driver, such as the installation of N card system, here with "NV" There are 5 files at the beginning, but only 2 are graphics driver files that need to be removed.

Go to the Program Files folder of the system disk to delete the corresponding folder of the video card driver, n card corresponds to "NVIDIA Corporation", and a card corresponds to "ATI technologies". Then you can safely install the new graphics driver. If it is a card, also need to "c:usersaaappdatalocal" under the CCC Configuration folder "ATI" deleted. You can then install a new, clean graphics driver.

Delete the related files under "Drivers"

Delete a folder under program Files

　　Written at the end:

　　Careful deletion of other files in the delete file operation

The whole operation is not complicated, but need to be careful, especially in the deletion of files, if mistakenly deleted the normal system files, may cause the system will not function properly. Therefore, it is important to note that the file creation time, while viewing the publisher of the file, to determine that it is Nvidia/ati published before the deletion. In addition, Win7 's driver folder also has NV's sata,raid, and so on, these are also the beginning of NV, note that it can not be mistakenly deleted.