I Did It Myself Well I found out how to do this BIOS mod but did it a different way. What I did was download the P78_BIOS_IMV3564_9C.17.00_x64 zip file from Gateway then opened the IMV-3564.exe file in my hex editor. I used WinHex but Hex Workshop also works. I found out that the SLIC table starts at offset 1012501 and ends at offset 1012874. You can replace that one area with another SLIC table like a 2.1 table from any OEM manufacture. You basically copy and paste the hex code by replacing it with the Gateway one. You can higlight the SLIC table and replace it by pasting. Also You have to make sure that the code is overwritten and not added on. Also make sure that you have the hex code in the hex area and not reversed or you may have problems. I tested this method and it works fine. I TAKE NO RESPONSIBLY FOR ANY DAMAGE YOU DO TO YOUR SYSTEM! USE AT YOUR OWN RISK!
Thank you for the incredibly fast response, Busykid508. I will test this bios after checking it against my mod to see what I missed and give some feedback. Again, thank you very much!
Tested it on your machine for activation?. I am not sure how this would activate as you changed no RSDT or XSDT OEM/TABLEID.. This is a bad solution.