The first thing you need to make sure of is that you are editing the right file. So, to be certain that you are dealing with the right windows folder (because for different reasons, you might have more than one windows folder), use this generic way to reach exact/right file: %WINDIR%\System32\drivers
So to go to the folder just type: %WINDIR%\System32\drivers\ (You can copy it and paste in the run dialog box for example or through the windows explorer's address bar)
then go to the file vgapnp.sys and do the following (the attach picture shows the steps as well):
1- Make a copy of the file vgapnp.sys in the same folder. So just copy and paste in the same folder. This will save you sometimes later since you do not have to modify it back to its original state.
2- Make another copy -say on the desktop-
3- Right click on the file -the one on the desktop- and open it with the Notepad. Add whatever you want at the beginning - I added xx- then save -> close. (You can open it again to make sure your changes have been saved)
4- Drag it back or copy it and paste it back to the original location (%WINDIR%\System32\drivers\) and select Move and Replace when Windows prompts with options.
Then just do the same steps in my original post and that should work. Then when you are done, go delete (vgapnp.sys) and rename (vgapnp - copy.sys) to the original file name (vgapnp.sys) -- you got the idea.
You can, as well, do the command line way if you want using the path I gave you (%WINDIR%\System32\drivers\vgapnp.sys) instead of (c:\windows\System32\drivers\vgapnp.sys)
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