I have a HP Pavillion dv9018X and have just tried to upgrade from Vista Home Premium to Windows 7 RC. The installation was cancelled when the upgrade advisor had issues with the keyboard filter. This is caused by HP Quick Launch buttons software. I have removed this and attempted installation again. All was good although the process was painstakingly slow. The installation when right up to the last phase where applications etc are re-installed. It got upto about 73% and then froze (after a whole night). I did a reboot and was told that the upgrade was unsuccessfull and was going to roll back to Vista. It did this all fine and I am back to Vista. I have no idea why the installation was unsuccessfull and cannot find any reason. Upgrade advisor was happy etc. Any suggestions would be appreciated.