Windows 95/4.00.81

Windows 95 build 81 is the earliest leaked Chicago build which uses the single Start button and menu by default, though 73f is the earliest leaked build to include them. It is also the earliest leaked build to introduce the now famous "X" close button on windows and by this point, the overall UI was mostly done and merely refined in later builds.

Installation
Installing from Windows 95 boot floppy:
 * 1) Prepare disk with , reboot, then format.
 * 2) Change path to the CD-ROM and go to the   directory.
 * 3) Run.
 * 4) Accept the default settings and then continue to the file copying process.
 * 5) When complete, reboot with the floppy still connected.
 * 6) Run   and press  . Browse to.
 * 7) Change   and   to   and.
 * 8) Save changes  then exit.
 * 9) Remove floppy and then boot to Windows.

UI

 * The new single Start button is now enabled by default.
 * Running applications above the taskbar were removed.
 * Control Panel changes.
 * All icons in explorer are now organized by name.

Virtual PC issues
If you're installing this build in Microsoft Virtual PC 2004/2007, make sure to select "XGA compatible" as your display adapter during setup. This build appears to have an issue with S3 and VGA drivers on VPC and will not boot with them. If you want a higher resolution, you can use the Super VGA driver from build 73f/g - select "Other..." and point to a floppy disk containing files  and   from build 73f/g.