I have a HP Pavillion G6 Laptop with OEM Windows 7 Home Premium that has had a new Mobo installed. The previous owner had been using it for games and had all sorts of stuff installed so I decided to reset to factory settings to clean it up (I have used the option on other laptops before with no problems) but I think that the new Mobo is causing problems and Windows will not start. I can get into the BIOS but not into safe mode etc. and when loading up it says 'preparing your computer for first use' and then an error saying that windows cannot complete the installation. Any ideas?