"Verify that the file exists and that you can access it" error on Windows 7

There are two problems you're running into.

Internet security settings

When you download a file from the Internet, most browsers place a tag on it that says it might not be trustworthy. The Windows ZIP extractor replicates that tag to all files extracted from an untrusted ZIP. Open the properties of the ZIP file you downloaded, then click the Unblock button (near the bottom) to remove the tag. Re-extracting the ZIP now that it's trusted should remove the warning when running the files manually.

Path length limitations

Lots of things in the Windows API will break on paths that are longer than MAX_PATH, which is defined as 260 characters. That ZIP file, when expanded, produces some perversely long paths, especially if you have a long username and extract it to your Downloads folder. (It hits exactly 260 for me.) I suggest moving the contents of the

Windows\Win7\AX88772B_Win7For32-bit64-bitx86CPUplatformWHQLcertified\AX88772B_Win7_v5.x.7.0_Drivers_Setup_v1.0.4.0

directory tree to a new folder with a path that isn't so obscenely long, then running setup.exe.

I found that I had changed the default "download" folder location to my D: drive rather than the system C: drive. Therefore, my permission for the "D:\Download" folder did not have the necessary permissions to execute the .msi file.
I did these steps described: Right click the folder and to go to folder properties, navigate to security tab, edit the security settings and add "SYSTEM" (no quotes) and click check users button.

After adding system to the download folder, the msi file opened with no problem.