Reboot, (Restart), it, and see if it reverts back to normal.
Without knowing more about the laptop that's the best we could say.
If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem.
This morning I wiped off the left hand side of my keyboard and everything became magnified. I've made sure it's not in safe mode, the magnifier wasn't on, it's not zoomed in, and I've already messed around with the resolution. What could I have done by hitting the left side keys that would blow everything up? It's not just my internet windows, it's my icons and other programs too.