You should use original kexts, just run the commands to patch them and update caches
sudo perl -pi -e 's|\x86\x80\x02\x2a|\x86\x80\x12\x2a|g' /System/Library/Extensions/AppleIntelGMAX3100FB.kext/AppleIntelGMAX3100FB
sudo perl -pi -e 's|0x2A028086|0x2A128086|g' /System/Library/Extensions/AppleIntelGMAX3100FB.kext/Info.plist
sudo perl -pi -e 's|\x86\x80\x02\x2a|\x86\x80\x12\x2a|g' /System/Library/Extensions/AppleIntelGMAX3100.kext/Contents/MacOS/AppleIntelGMAX3100
sudo perl -pi -e 's|0x2a028086|0x2a128086|g' /System/Library/Extensions/AppleIntelGMAX3100.kext/Contents/Info.plist
sudo touch /System/Library/Extensions
If there's no HPET in your DSDT, use this patch
http://Olarila.com/Patches/Misc/New%20HPET.txt