I downloaded the latest ATI Mobility Radeon HD 4500 graphics card drivers for my AMD Web site. I have a genuine copy of Windows 7 Ultimate installed on my laptop. When it comes to installing the driver, there is a dialog box saying "This version of Windows requires a digitally signed driver you are trying to install an unsigned driver there are two options. Do you want to continue or cancel the installation continue the installation, but the drivers did not work and had to return to Ms Drivers. How I can update successfully pass through this control irritating?
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