Aman11

Hi I am new to the forum, I am working on an eGPU project. I have a PE4C GEN 3 I purchased on ebay and a gateway ml6725 with an express card slot. currently running windows 8.1 64 bit. I cannot get my laptop to detect the egpu even though everything to do this works fine (EXpress slot, gpu, pe4c). I started with a DSDT override to make sure I can host it but cannot get by step 6, It says this command is not recognized or /loadtable is not a command. Is there a typo or am I missing something. I am running the command prompt inside the folder that contains the dsdt file in question. Please help so I can continue my egpu project and get this thing running. Thanks for your help.