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In this guide I provide a way to give 100% optimus internal LCD mode on a iGPU-only equipped Macbooks (not GT650M/GT750M/HD6750M MBP) on every boot. No special hardware interaction is necessary! Discovered as part of my implementation at >>

Macbook Pro 2015 15" with dGPU GT 750M This mini-guide is for Windows 10 (for OS X please just use the following: https://forum.techinferno.com/<wbr>apple-egpu-discussion/10289-<wbr>script-automating-<wbr>installation-egpu-os-x-inc-<wbr>display-output.html ) Here's the whole process I did for Windows 10: 1 - (plug and play) - didn't work, I was getting black screen (not even booting). Tried a few times hot plugging the firewire while loading Windows 10, without success. Finally one time, got into Windows, updated NVIDIA drivers and external screen was showing. Rebooted, eGPU was never recognised in Windows 10 anymore. Nando suggested I had to install this: https://forum.techinferno.com/<wbr>apple-egpu-discussion/8558-%<wbr>5Bguide%5D-macbook-enabling-<wbr>optimus-internal-lcd-mode.html 2 - installed the above 'UEFI' grub, and managed to boot computer with eGPU on and connected, but it was not recognised in Windows 10.. (not even on device list) 3 - installed eGPU setup 1.3 on a USB STICK, boot to setup 1.3 and did pci compression and fiddled with a few options. Without immediate success. Then, went to try and boot from the custom UEFI mode and was finally detected in Windows 10 but with Code 12 (not enough resources... ) in device manager. So tried to boot through setup 1.3 (without any luck any of the times with different boot methods listed inside there MBR, MBR2, UEFI..., etc). 4- Went to Device Manager -> View Resources by Connection."Find your eGPU. Then above it will be a series of PCIe Bridges. Maybe 5 or so. What you want to do is uninstall the eGPU and work your way up the PCIe Bridges, uninstalling those as well. When all done, do a rescan in device manager after which it will find those uninstalled devices, install drivers for them. If your eGPU doesnt get a driver installed for it then run the NVidia installer." 5 - No success yet... 6 - Thought.. "My macbook is already booting with eGPU connected (i.e no more black screen at boot)". "Before I try and mess things up with my system. I will restore back to original bootcamp EFI (please see guide in this threat a few pages back ..on how to rollback) and see what happens" 7 - Restored original EFI - Reboot with eGPU turned on and connected, boot successfully onto windows, and had the NVIDIA external card recognised! So updated drivers again and boom! Working. Now NVIDIA control panel detects two GPUs: dGPU and eGPU, the dGPU can be used dedicated to Physx and I can run some games now at 60fps at 1080p Hopefully my steps help you with yours. Remember that my macbook has the GT 750m + intel graphics. Cheers

Of course.. I'm using win 10

So after calibrating my display I noticed the profile wasn't being forced. I searched around and found its a common problem and I stumbled across this fantastic tool called CPKeeper that was made by a user frustrated with the same issue: CPKeeper (Color Profile Keeper) nVidia could easily create a force profile option but choose not to so profile settings are usually lost in 3D games. This LG display I have has the ability to program a profile into the hardware but unfortunately they want you to buy their proprietary shit.