Gump
A modified inf is needed to run desktop graphics drivers on a laptop.You can do this with the "mobility modder" from Driver Heaven.The 4750 is not supported though,are you sure it's not a 4570?
When using any driver,on a laptop, other than the one from the manufacturer may cause you to lose some features that originally came with your laptop.
mobility modder- http://www.hardwareheaven.com/modtool.php
okay , sorry gump youre right , it is a 4570 not 4750, that's why i'm a member of this family here ,lol.
tnx for the link , now i can see there is new version of drivers for this laptop here .