How to update the graphics card driver under Win7

When updating the graphics card driver under Win7, if you uninstall the existing graphics driver of the system and then directly install the latest graphics driver, the system sometimes prompts the installation error, and even leads to the new graphics driver. It can't be installed at all, unless you let Win7 automatically install its own driver, and then use the new driver to cover the latest driver. But this way of covering installation will not affect the performance of the graphics card, no one knows, but we can find ways to bypass the verification of Win7 and directly install the new driver of pure graphics card.

Get system folder modification permission

Because Win7 system automatically backs up a driver file (in the system disk Windows
system32DriverstoreFileRepository folder), and the default is priority installation This driver, so if you want to install a new driver, you must first delete the driver files in that directory. However, in general, the default user does not have permission to delete files in this folder, so we should first obtain the operation permission.

First right click on the nv_disp.inf_x86_neutral_0705e2ead80da9c9 folder, select Security - Properties, select the advanced settings for special permissions, then select the current login user and add all file operation permissions. After obtaining this permission after completion, you can successfully delete the files in this folder.

Successfully obtained full control rights under this folder

Restart Computer
Install new driver

After the user has obtained the operation permission of this directory, You can uninstall the current graphics card

driver. After uninstalling, do not restart the computer immediately, enter the Windows system32DriverstoreFileRepository folder of the system disk again, find the directory of the nv_disp.inf_x86_neutral_0705e2ead80da9c9 graphics card driver, and delete all the files in the directory.

Then you can reinstall the graphics driver. The new driver installed in this way will be a fresh installation, not over the previous driver.

Download and install new driver

Risk warning: You can also delete the driver files related to the graphics card under the system folder

Of course, if the user has strong hands-on ability, you can also enter the system. Disk, put the "Windows" folder, find the relevant files in the delete, if it is N card, it is "NV", at the beginning; if it is A card, it is the beginning of "ATI"; ATI” . Note that there are many files that need to be deleted in this part. In order to prevent accidental deletion of other system files, there is a simpler way to observe the installation date of these files. Generally, the creation date of the file and system files related to the graphics card driver is different, and the file date can be easily seen in WIN7. It is easy to distinguish the driver file from the system file according to the letter at the beginning of the file and the date of creation.

Then go to the "Windows" "System32”“Drivers” folder, also find the file starting with NV/ATI to delete here. It is best to judge whether the file is created based on the date of the file creation. Is the driver, such as the system to install the N card, here there are 5 files starting with "NV", but only 2 are the graphics driver files, you need to delete.

Enter the folder corresponding to the graphics card driver in the “Program Files” folder of the system disk. The N card corresponds to “NVIDIA Corporation”, and the A card corresponds to “ATI Technologies”. After that, you can safely install a new graphics driver. If it is an A card, you also need to delete the CCC configuration folder "ATI” under “C:UsersAAAppDataLocal”. Then you can install a new clean graphics card driver.







































Be careful to delete other files in the process of deleting files

The whole operation is not complicated, but you need to be careful, especially when deleting files, if you delete the normal system files by mistake, the system may not work properly. Therefore, be sure to pay attention to the creation time of the file, and at the same time check the publisher of the file, and confirm that it is released by NVIDIA/ATI. In addition, Win7's Driver folder also has NV SATA, RAID and other drivers, these are also the beginning of NV, be careful not to delete it by mistake.