Download Mac OS X “Mountain Lion” Look-Like Login Screen for Windows 7

Transforming Windows look into Mac OS is one of the most favorite tasks of all customization lovers. I know many people who love to convert each and everything in their Windows OS to look-like Mac OS whether its Windows theme, icons, boot screen, eye candy effects or wallpapers.

We have shared a few Mac OS transformation packs in past to make Windows OS look-like Mac OS, you can find them in our Themes and Wallpapers section. These transformation packs automatically modify system files to change Windows UI and to make it look-like Mac OS.

But there are many people who don't prefer these 3rd party transformation packs. They want to change thing manually rather than depending upon skin packs. That's why we have shared a Mac theme for Windows 7 in past which can be downloaded using this link.

Now its turn of Login Screen. Recently we shared a Mac OS X "Mountain Lion" look-like login screen for Windows XP:

Download Mac OS X "Mountain Lion" Look-Like Login Screen for Windows XP

Many people liked it and requested a similar login screen for Windows 7. Today in this topic, we are going to share Mac OS X "Mountain Lion" look-like login screen for Windows 7 users.


This login screen has also been created by the same person "PeterRollar". It can be used in both 32-bit (x86) and 64-bit (x64) versions of Windows 7.

Interested people can download it using following link:

Download Mac OS X "Mountain Lion" Login Screen for Windows 7

After downloading extract the file using 7-Zip and you'll get a folder containing 2 DLL files and 2 BMP files. "authui.dll" file is the main file which will provide Mac OS X login screen in Windows 7. The other DLL FIle "basebrd.dll" is optional. It'll replace Windows 7 branding logo which is displayed in bottom-center of login screen.

You'll need to replace existing DLL files in your Windows 7 with these new DLL files. To learn how to replace and use new DLL files and the other BMP files, check out instructions given in following topic:

How to Use Instructions

The same instructions will also work for this new Mac OS X login screen. After replacing DLL files and restarting your computer, you'll be able to enjoy new Mac OS X login screen in Windows 7.

Do you also like Mac OS look? Do you also prefer changing Windows UI into Mac UI? Feel free to share your opinion in your comment...


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Posted in: Windows 7

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  • So far, this is most descent Mac Login for Windows. Ever since, achieving the Mac UI in Windows, is the most addictive one :-)

  • please tell how to design this type of themes

    i want to know please screencast the video

    i beg u

  • after I replaced those 2 files, my Win 7 wont be able to start up

    it will just stucked in a black screen with a mouse Cursor

  • @heeroyuyj

    Do you have Windows 7 with SP1 installed?

  • @heeroyuyi
    32 bit version is used by myself and 64 bit version is tested by a very well known member of Deviantart. So if you have the correct version of Windows 7 this shouldn't happen to you. This doesn't work on Windows 7 without servicepack. I think you used the wrong version of files. Be sure to use 32 bit files for a 32 bit system and same for 64 bit systems.

  • I have SP1 installed

    I replaced both "authui.dll" in System32 and SysWOW64, is this the reason?

    mean while, I didn't find basebrd.dll in System32 and SysWOW64, is it shipped with win7?

  • is this make an effect just for a login screen or for whole system? thanks

  • i liked it but dont u got something that can change my BOOT SCREEN to that of mac os..

  • VG Its better to use genuine Mac OS X on PC. Here I am giving some instructions to install Retail OS X 10.8 Mountain Lion on PCs. You can try-
    Unibeast+Multibeast (Requires a retail OS X DVD or Installesd.dmg or Mountain
    iAtkos ML2 (Pre modified OS X Mountain Lion for PCs) requires a dual layer DVD
    Niresh OS X 10.8.2 : Niresh works both on intel and amd and atom.
    All are working and tested methods.

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