_GGG_

I see not answer, can someone suggest how to reinstall Yosemite original video driver without reinstall the full OS? I have copied the installation files OSX file on USB and then installed on HDD. Thanks. G.

Hi to all, I am new here hope someone can help. I have installed mac Yosemite 10.10 on my Sony Vaio (i5 - 8Gb - hd800GB - Nvidia Geforce 410M) but I have some issue for the video card, the only way to start it was using GraphicsEnabler=No in boot option and anyway video worked bad and HDMI port was dead. I tried to install kexts of Maveriks but does not work so I had to come back deleting the video kexts and replace all permissions with kexts wizard, now works even worse because VLC do not find openGL, video blink and HDMI is still not working. The proper kext org.hwsensors.driver.GPUSensors should be suitable for my video card but googling does not help. How to solve? Gio