Hi Guys! With the help of the forum I have managed to setup a EXP-GDC Beast eGPU. The GPU that I have used is purely for testing and is what I had laying around it is a rather weak HD4650! It came across my mind that its probably the old shitty gpu that is the problem? I have carried out the DSDT override and I have the large memory in device manager after clearing error 12 I thought all was well, but there is no output on the external display. I am normally competent with my computer stuff and I feel like I'm missing something very simple. The system spec is: EliteBook 2570p CPU: Intel i7 3740QM RAM: 16GB Corsair Vengeance BIOS Rev: F.42 Long story short is my eGPU appears to work fine with no errors showing but there is no output at the external display. If there is anything that needs uploading or whatever please let me know below! Thanks in advance guys