After 10.18.14.4156 Intel(R) HD Graphics 4600 update my NVIDIA GeForce GTX
670 no longer works properly. I have tried everything I can think of. I was
able to get it working temporarily by doing a full system restore but as
soon as the windows update ran and did the 10.18.14.4156 update on the
onboard graphics, the discrete card no longer functions properly. I was
also able to rollback the driver for the 4600 Intel so it would work
temporarily, but as soon as it does the update again, it stops working and
I have to use the onboard HDMI port. If I try to use the NVIDIA HDMI after
the update, I can get picture and a cursor, but no desktop icons (strangely
the start menu and the desktop background are there) and cannot do any
other tasks. Since it works when that update is not installed and I have a
fully clean windows 8.1 install, I know its not a virus or setting and I
have eliminated hardware as being the issue. I cannot get the driver to
rollback again without doing another full recovery and I can't use the GTX
670 HDMI or DVI port at all right now. It must be the NVIDIA and Intel
drivers interfering with each other. I don't know who to contact further as
my rig is out of warranty, but it seems like a support issue not a personal
issue to me and even though my device is out of warranty, something like
this should not be happening and it should be taken care of. Also, somehow
the driver updates itself and I cannot fully disable or uninstall the Intel
graphics drivers, I have tried and they come back on reboot. Please help me resolve this problem!