My display has gone funny for no reason.

Everything viewed on my computer has increased in size. Every application I open is too large for my screen, the font and window. I have tried changing view specifications but it not helping with all the problems at the moment. Is there anyone who can help me with this?

Hi, act222. Welcome to the Discussions.
1. Try starting up in Safe Mode, then resetting your Display preferences (System Preferences > Displays). Then restart normally.
2. Reset PRAM and NVRAM. Then reset your Display preferences if required.
3. Run the Apple Hardware Test that came with your Mac. It will test the video subsystem. See my "Apple Hardware Test" FAQ for comprehensive advice on using the Apple Hardware Test in troubleshooting, including running the test in Loop Mode.
4. What changes did you make to your Mac before this problem arose?
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

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