I was looking for a reasonably powerful laptop with Nvidia graphics card (CUDA). Since I'm a fan of Windows 8 is not necessarily and anyway still a Windows 7 license had lying around, this notebook was just right without OS. Installing Windows 7 went relatively smoothly. You just have to switch off earlier in the BIOS UEFI, so you can boot from a USB DVD drive. Unfortunately Acer provides drivers only for Windows 8. But they are largely identical to those for the previous (V5-571G) offered Win7 drivers. Chipset, USB and video drivers but were not working. The one loads most directly at Intel down Installing the graphics card driver is a bit tricky. Windows automatically installs a driver for nvidia graphics card. This you have to uninstall and reinstall the Intel driver first. Then you can install the NVIDIA driver. The best equal to the nvidia from the homepage.