Again, if you can fill in some of the blanks, we can be of more help. What processor have you got, and which graphics do you have, HD3000 or HD4000? You likely have an Intel Wi-Fi card, so yes, it will need to be replaced. Look at the link in post #10 and go to section 2b, it gives you instructions for booting your Windows install from AHCI mode, eliminating the need to switch each time you boot a different OS. Try booting into myHack (it will be in your Applications folder now) and choose to run myFix (the Full version) to see if that helps the graphics. Also update Chameleon (easy was is to install Chameleon Wizard).