Hi everybody! I have an Acer Aspire 5755G ( i7-2670QM 2.2GHz - 6GB RAM DDR3 [ but it reads only 4 GB, don't know why ] - Windows 7 Ultimate SP1 x64 bit ) with an nVidia GeForce GT540M on it, but the system doesn't detect the gpu. Currently I'm running with the Intel HD Graphics Family ( because...