Please ensure that your computer is fully up to date with all current Windows Updates. This is important to ensure Windows 7 is compliant with your computer's hardware and connected devices.
You should also go to your computer's vendor website and search for your model computer. Download and install all drivers for your model computer and for Windows 7. This is also important so that your computer is compliant Windows 7 and connected devices.
Ensure that you install the current device drivers.