M7730y laptop is the Inspiron 15r Special Edition running Windows 8. I have 8 gigabytes of RAM and 1 terabyte of Hard drive space. The laptop is little more than a month old. My original problem was unexpected shutdowns, which I have found was due to overheating. The overheating is caused by the computer's use of two video cards: the Intel(R) HD 4000 and the AMD Radeon HD 7730. Both drivers came preinstalled upon purchase of the computer. The issue is that both graphics cards are running simultaneously, overheating the laptop and causing the random shutdowns. I an fix this issue by disabling the driver for one of the cards, however, this causes a new problem. Each graphics driver is dependent on the other (something I didn't know was possible), and disabling one causes severe issues for the other, such as resizing of my start menu icons and locking my brightness at 100%, with no way to change it. I'm looking for one of two solutions:
1. Instruct me how to properly setup my computer so that only one video card (preferably the AMD Radeon), is in use and is independent of the other,
Or
2. Inform me of another way to regulate my computers overheating issues that allows both drivers to run at once. I have already installed the latest BIOS, and external cooling hardware will not work. The computer is practically new so dust build-up is not an issue. So please do not suggest those as solutions.