i want to know how to install windows 7 into this laptop . like i have a windows 7 disk from a dell xps laptop.... when i am booting my free dos system with it , windows is loading the files , but is getting stuck on the point where it displays the windows 7 logo after loading the files . i might have changed the bios settings in frustation , but can u please tell me the exact bios and boot menu settings for my LENOVO G505S laptop? i have windows 8 too , but it is in a pen drive , which i can later upgrade to after i install my windows 7. and i am sure that this procedure is possible because my friend has done the same thing with the same laptop . but it was a hit and trial method and hence he's not able to provide me the exact help i want . i am not able to use my new laptop because of this problem :( KINDLY HELP!!!