Windows 8 build 8045

Windows 8 build 8045 is a pre-Developer Preview build of Windows 8. This build was leaked to BetaArchive on 2020-01-26. It includes a new desktop background and the system crash screen has been changed to resemble the RTM, although it is black instead of blue.

Start screen
The Start screen appears to hide all tiles on boot, until you start interacting with them.

Lockscreen
On boot, if the Start button has been removed, the lock screen may not display correctly (such as displaying nothing but the lockscreen art, or not showing the date).