A:Answer For models with an iGPU, go to Device Manager, locate the dropdown for Display adapters and open it up. You should see two entries: one for your iGPU, and one for your discrete GPU. Right-click the entry for your iGPU and click “Disable device” in order to turn it off within Windows. If you need further assistance please contact Acer support at 866-695-2237, or you can post your question on the Acer Community where there are many users that post questions and offer help and advice on Acer products.