08-30-2014 08:57 AM
I installed intel, nvidia vga drivers from lenovo and nvidia display driver v 340.52 from geforce site on a laptop Lenovo G580 (Windows 7 home basic 64 bit). However nvidia GPU activities is empty no matter how much graphics is being played. On geforce website it states that the optimus technology is supported starting from win7. Lenovo website offers a driver called optimus only for win 8. Which drivers should I install? How can I check that the swithable graphics technology is working?