1. Install full patch visual C++or other usefull apliation: http://ironcad.pl/pobieranie/aio210.zip
2. In CMD i use two commend: sfc/ scannow and DISM.exe /Online /Cleanup-image /Restorehealth
3. Best option is delete from device manager driver for graphic and system automatic reinstall good driver
4. Last option i check in control panel driver is select nvidia
5. Some time i use power managment and switch to ultra speed