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Welcome to the Power Users community on Codidact!

Power Users is a Q&A site for questions about the usage of computer software and hardware. We are still a small site and would like to grow, so please consider joining our community. We are looking forward to your questions and answers; they are the building blocks of a repository of knowledge we are building together.

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Q&A Why does my second LCD monitor overflow, when I try to maximize windows?

An LCD (unlike a typical CRT) has actual hardware pixels for the defined "native" resolution. If you set your video card (in this case, set your Windows display resolution) higher than the native r...

posted 3y ago by manassehkatz‭

Answer
#1: Initial revision by user avatar manassehkatz‭ · 2021-05-16T02:19:04Z (over 3 years ago)
An LCD (unlike a typical CRT) has actual hardware pixels for the defined "native" resolution. If you set your video card (in this case, set your Windows display resolution) higher than the native resolution, the behavior is undefined. Possibilities include:

* Blank display
* Useless display (fuzzy, wavy, noise, etc.)
* Truncated display (which sounds like what you are getting)
* Squished display - e.g., if 1280 -> 1920 would result in every 3rd pixel disappearing.

But nothing you do can make an LCD display actually produce a true and proper image at a higher resolution.

In fact, Windows typically has a delay (something like "Do you want to keep this setting?") so that if you end up with a useless display then you just wait 15 seconds and the display reverts back to the previous setting.