I recently installed Windows 8 Pro upgrade from 7. Yesterday it got as far as the sign-in screen and then everything went blank. The monitor was receiving a signal but showing nothing. After a while the mouse cursor appeared & I could move it around, but that was all. Nothing else happened so after 30 minutes or so I rebooted with the same result.I tried to do a 'safe mode' re-boot, but it refused to do so. After several tries I inserted the Windows 8 disc. A screen appears asking me if I wanted to repair my computer, so I ok'ed it. After a while a loading whirl appeared with a % counter. When this finally got to 100% after 30 mins or so it re-booted. It then appeared with the screens from initial install. When these had finished I was able to get onto the desktop only to find that it had wiped off all my programs!! There was a IE icon entitled 'Removed Applications' which, when opened list all the programs removed with highlighted ones which directed me to the relevant web-site. Any ideas why this happened? Is it a feature of Windows 8? Have they removed the 'safe mode' via f8 also?