There are no Dell drivers for windows 10 for your model. Do not install the windows 7 drivers! Since the laptop is almost 8 yrs old you have to settle for generic win 10 drivers that might not give you all the benefits of Windows 10. Did you install the 64 bits version of windows 10? Go to Device Manager and let Windows 10 search for drivers. Those should be better than win 7 drivers.
We cannot see the graphics you posted. Only you can see them.