My aspire laptop has been upgraded to Windows 10. I have the latest video driver as verified by the Acer website. The control panel is set for maximum (recommended) resolution, but a number of programs tell me that I need to change my screen to a higher resolution as the current one is too low to allow the program to work properly. I presume a program has locked the screen resolution somehow, but I don't know what to do. Several program windows need the higher resolution, as they are too large for the current setting. The computer uses Intel HD graphics. When I open the Control Panel - Adjust Screen Resolution section, a warning triangle shows alonside the message 'your resolution is lower than 1200 x 900. Some items might not fit on your screen. The Display box says I have a Mobile PC Display, the Resolution box is set to the recommended 1366 x 768 and orientation is Landscape. Any help gratefully received.