I just did a system reset (and formatted the disk that had windows on it), after starting everything was okay until i ran windows update - it showed that there are a few updates, it downloads all of them except the last one - "Advanced Micro Devices, Inc. driver update for AMD Radeon HD 6800 Series." - it has been stuck at "Downloading updates 99%" for at least 2 hours now, and restarting the computer doesn't help. It's worthy to note that my AMD driver is already installed and up to date!

I am now running an sfc scan and i will update this post as soon as it is done.
Until then - do you have any other suggestions?
update: it found corrupt files and fixed them but still gets stuck at 99%.