Does your GRAPHIC CARD show up with any errors in the device manager usually a Yellow Punctuation Mark:!:
Device manager is accessible by right-clicking on My Computer, selecting Properties, and selecting the Device Manager tab. Alternatively, you can go thru the control panel to find it. When you say, "downloaded the necessary driver for my screen" do you mean Graphics Card driver.
Lastly, what kind of graphics card do you have.

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