Hi guys, I just installed Windows 8.1 onto my ATIV Smart PC (Atom CloverTrail). It does work, unlike what Microsoft says. Moral of the story: dare to try the impossible As they say, no picture, no talk, so here's an image for you: How to do it? You'll need the Win8.1 32-bit ISO. Get it from Windows 8.1 Preview ISO files - Microsoft Windows Follow instructions on http://forum.tabletpcreview.com/sam...all-windows-into-your-ativ-smart-pc-500t.html to create a bootable Win8.1 USB key. Spoiler: A LOT of hard work coming right up... Before attempting any formatting, run SW Update on your ATIV to download ALL driver files EXCEPT Wacom Digitiser. YOU WILL NOT BE ABLE TO DO THIS ONCE ON WIN8.1 AS SW UPDATE DOES NOT WORK THERE! Get the other drivers from the links I provide below: Wacom Digitiser Drivers - http://cdn.wacom.com/U/drivers/TabletPC/ISD_DualTouch_711-12.exe Much newer drivers than those Samsung provides After you've prepared the USB flash drive, proceed to boot your ATIV from USB by starting BIOS Setup by holding down the Windows button when powering on. Select the last tab, then select your thumbdrive at the bottom (should see something like UEFI: Name of thumbdrive) Please note that you will require a USB hub, a USB keyboard and mouse because touch doesn't work during setup! Also note that it takes FOREVER to boot from USB - don't panic! Follow the instructions, and select the Custom Install option when asked. If you need the product key, visit the Windows 8 ISO download page I linked above. I deleted the 100MB partition, MSR partition and my C drive partition, leaving recovery intact. Let it install. It will take a while. Go get a drink/beer. After you've booted into W8.1, it's now time to install drivers. Install the William drivers that you've downloaded from SW update first. Afterwards, install the drivers in any order you please. Take special care NOT TO INSTALL SW UPDATE because it does not work! You will need to install the PowerVR graphics drivers MANUALLY through device manager because the setup file will refuse to run! Go to Device Manager > Display Adapters > Microsoft Basic Display Adapter and update the driver Restart, and you should be up and running with Win8! For the lazy or the cannot-be-bothered, the video shows W8.1 on the ATIV Smart PC. [video=youtube;gO2iYDTs0ik]http://www.youtube.com/watch?v=gO2iYDTs0ik[/video] Hope you guys enjoyed this!