Shortly after you install the Intel drivers, Windows Update will tell you that you have a new system hardware update. If you install the new update you will reinstall the MS driver. When the regular new updates come they will also reinstall the MS drivers and force you to have to reinstall the Intel ones.
If you do Windows Update in desktop mode from Control Panel or IE, when you get that update that will reapply the Microsoft driver, right click on it and choose "Hide update"