I downloaded Star Wars, The Old Republic last night, and ever since then my screen resolution has been weird. I think my PC have gone into Safe Mode (is that still a thing?). Images and text aren’t as sharp, everything seems to have been “stretched” horizontally.
I assume you’ve already tried rebooting the computer?
Next thing to try is: Right click on the desktop background, choose “Display settings” (or click on the Start button and start typing “display settings” then click on it when it comes up as a choice). Then change the “Resolution” setting back to the screen’s native resolution, which should be the one marked as “Recommended.”
You may want to try re-installing the display drivers from the HP site for your laptop. Go to support.hp.com and then go to “Software and Drivers” to locate the appropriate driver.
I have an HP laptop with Windows 10 and I have the same problem. Every time the computer reboots the screen resolution and icons are super sized. I have to put the computer to sleep then awake to return things to normal. You’re right, it is wierd.