Samsung RV-520

Samsung RV520
CPU : i7 -2630QM
GPU : GT 520M
BIOS : Phoenix Technologies Ltd.
Version : 07PQ
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EDIT :
I have to add that my problem is that I installed 4GB of RAM more and it won't recognise, it` hardware reserved, even tough the graphic reserved memory is 529MB.
I cannot change it without unlocked bios.