Intel 82852/82855 GM/GME Graphics

When installing 855GM Series video driver Windows 7 reverts back to Standard VGA adapter after restart. The problem is that 855GM Series video driver is not native for Windows 7 and it will always choose Standard VGA Adapter as native video driver. A lot of older laptops have this video chipset.

The driver that is reported functional is Intel(R) Graphics Controller This driver is the same version as the Windows 7 Standard VGA Adapter driver, but it has a newer release date.

Installation of this driver is a bit involved, because you need to trick Windows into thinking the Intel driver is the best “option”, opposed to installing the Standard VGA Adapter driver from Windows.

Obtain the correct drivers

Download the Intel driver to the system that needs this driver. Do not run the installer yet, as it will attempt to run the installation process for Windows XP.

Uninstall video drivers that do not work

If you see exclamation marks on your previous drivers in Device Manager, unistall them. Your Device Manager should say that you have Standard VGA Driver installed under Display category and exclamation mark on “video controller”. Make sure you restart PC when asked.

Proceeding beyond this point is entirely at your own risk. Editing system files is tricky business, and systems might behave differently between varying brands, models and hardware. Only do this when you have a full backup, and are willing to take the risk of destroying data or hardware.

Obtaining rights to the Standard VGA Adapter driver

We will need to edit “c:\windows\system32\drivers\vgapnp.sys”, but there is a problem. Windows Vista and Windows 7 will NOT allow you to edit system files. Changing security attributes of that file will not work, as the file is owned by “TrustedInstaller”. We will need to own the file and give ourselves the full control to edit it.

  • Click 'Start' and in 'Search' type 'cmd'. The result will show on top.
  • Right-click on 'cmd' and choose “Run as Administrator”.

You should now have a Command Prompt with administrative rights running.

First, execute the following command to take ownership of the standard VGA driver:

takeown /f c:\windows\system32\drivers\vgapnp.sys

Now, execute this command to assign all permissions for this file to the user “peter”. (Change “peter” to the user you are currently using.)

cacls c:\windows\system32\drivers\vgapnp.sys /G peter:F

If 'cacls' command does not work you can try using 'icacls'. If you cannot edit this file, try to boot to “Safe Mode” and try it again.

Making the driver unreadable for Windows

  1. Open c:\windows\system32\drivers\vgapnp.sys in Notepad.
  2. Add a single character to the begining of the text. So if the first characters are “MZ”, add “x” in front of it so it says “xMZ”.
  3. Save the file. This edit will render that file unusable, but recoverable if you ever need it in the future.

Remove the Standard VGA Adapter

  1. Open Device Manager and uninstall Standard VGA Adapter.
  2. Reboot the system when prompted.

Windows will attempt to install drivers at boot, but this will fail. This is intentional – we caused this failure by making the standard VGA driver unreadable. Now, we can continue the installation of the correct Intel driver.

Install the Intel driver

Option 1: Run the installation package
  1. Right click on the downloaded .exe file, and choose “Properties”.
  2. Choose the tab “Compatibility”.
  3. Check the checkbox to run this program in a compatibility mode, and choose “Windows XP (Service Pack 2” from the dropdown menu.
  4. Click OK to close the Properties window.
  5. Now run the installation package as usual, and follow the prompts on screen. Restart the system when this is being asked.

The installation as described above may fail due to many circumstances. In such cases, extract the installer with 7-Zip and follow the manual installation procedure below.

Option 2: Manual installation
  1. Go to Device Manager and you should see the exclamation point next to “video controller” and “video controller (VGA compatible)”.
  2. Right-click on “video controller (VGA compatible)” and choose update driver.
  3. Choose “Browse for the Driver”.
  4. Point to the driver directory that you downloaded and extracted (win2000). Click “OK”.
  5. Wait for the driver to be installed.

The installation is slow and might cause Device Manager to stop responding, with a freezing window. This is normal behavior, the driver was never intended for use with Windows 7 and does not give the correct feedback to the OS to populate the progress bar. The window will “unfreeze” after installation is done, which usually takes between 2 and 7 minutes.

Making the driver readable again

  1. Open c:\windows\system32\drivers\vgapnp.sys in Notepad.
  2. Remove the first character you put there, which was “x”. Save the file and close Notepad.

Restoring proper driver security permissions

  1. Right-click on any other file in c:\windows\system32\drivers.
  2. Choose “Properties”. Go to “Security” tab.
  3. Now compare that security tab with the security tab of c:\windows\system32\drivers\vgapnp.sys. Just make sure the security tabs of those two files look the same (all tabs and advanced options).

In order to add “TrustedInstaller” it is not the same as regular usernames because it is a service. You will need to type “NT SERVICE\TrustedInstaller” (without quotes) when adding it to own the file. Make sure this service gets all permissions.

Do not forget to remove your own account from the permissions list of vgapnp.sys. It is not supposed to be there.

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  • knowledgebase/it/windows/7/drivers/intel-82852-82855-gm-gme.txt
  • Laatst gewijzigd: 2019/02/11 15:13
  • door Daan Berg