Machine spec: FTTH/OS: Windows 7 64bit Pro/ CPU:intel Corei7-3720QM 2.60GHz/ RAM:16GB/ Graphics Card :NVIDIA GeForce GTX675M 2GB + intel HD Graphics(NVIDIA Optimus) PC is in a repair center now. The supporter was said. 'A device is all no problems.' 'Is second life congenial to windows7 64 bit and NVIDIA GeForce GTX675M and NVIDIA Optimus?' I worry about second life not working well by this new laptop. 2012.10.14 laptop was again sent to me. However, nothing was solved as a result. The maker's person in charge of repairs said. laptop is all functioning normally. They said again...When Optimus does not work, The new driver of NVIDIA is always installed. With the control panel of NVIDIA, choose the program of second life and make it into high performance. If laptop crashes even if it takes these measures, it will be Optimus is not working well to the program of second life. When the company of second life did not support Optimus, did it accept? I tried all. of course, The New driver was updated on October 10. However, when my viewer logged off, it became a blue screen again. I do not know that Linden Lab has denied Optimus. i should have chosen the laptop in which Optimus is not carried and which is NVIDIA Gefoece GTX 580M.