My computer is the Acer Aspire 7745G with a ATI Mobility Radeon HD 5650. my problem is when trying to switch to high performance mode. I get a message saying my graphics card did not switch over and it tells me i need to right click my desktop and go to configure graphics. When I do and try to switch it manually to high performance mode I get a second message saying "switching the graphics processors cannot be performed at this time due to one or more running applications." this maybe an easy fix but i cannot figure out how to get it to switch i try and close everything actually noticeably running and then try but it still doesn't work. If anyone has any suggestions it would be appreciated. Thanks.