Fix Monitor Can't Full Screen on ATI/AMD Radeon Graphics Cards

This is actually not a new problem, but since I have only recently met with this problem, there is nothing wrong with being reappointed, who knows if it can help friends who have similar problems.

Here's how it happened, bro, at one time I tried connecting a Windows 8.1-based PC (AMD Radeon graphics card) with an LED monitor (1920 x 1080 full HD resolution) using an HDMI cable, and it turns out that the image that appears on the monitor is not full (aka full screen) part of the screen that is not filled with images (there are black frames around the screen), even though the resolution has been set to 1920 x 1080. The illustrations are like this.
I thought something was wrong with the monitor. I tried to change the monitor settings here and there, check the cable connection, turn off the monitor and PC, the results are the same. Maybe the HDMI cable? It could be because previously the monitor could be full screen when using a VGA / d-sub cable. Ok, I tried to replace the HDMI cable, the result is still the same, not full of images.

I tried to open the internet to find a solution. Apparently, this is not a problem with the monitor, but the PC is the problem, especially in the graphics card driver settings. According to the article I read, this problem occurs in almost all brands of monitors (such as Samsung, Asus, Acer or LG) which are connected to PCs with ATI / AMD Radeon graphics cards, via HDMI and DVI cables (VGA not included).

To solve the problem that the monitor cannot be fully screened on a PC with an AMD Radeon graphics card, please follow these easy steps.

Right-click on Desktop, select AMD Catalyst Control Center. If it's not there yet, please download the AMD Catalyst Control Center driver through the official AMD website.
In the left column, open the My Digital Flat-Panels tab, then select Scaling Options (Digital Flat-Panels).
Pay attention to the position of the slider in the Scaling Options box. That's the problem, by default, AMD Catalyst drivers scale the image output on a monitor with a resolution of 1920 x 1080 to around 5% Underscan (some are 10% or more, depending on the monitor).

To get a full-screen display, swipe the slider until it clicks right onto the 0% Overscan scale, then click Apply.
Done, now your monitor can display images in full-screen alias like this.
In conclusion, this is not a problem with CB monitors, so you don't need to rush warranty claims or buy a new monitor. Ok, hope it's useful :)
Luck will come to anyone who wants it~

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