Hi NasJiJi, Please try the below steps and get back to us with the results.
1. In some cases, some Intel drivers may install from Windows Update which allows the Panel Self Refresh function on devices that do not actually support the feature. So when the feature is turned on, the panel is blank.
To turn off the feature, right-click the desktop, and then click Intel Graphics Settings > Power > Battery, and change the Panel Self Refresh option to Disable. Click Apply to confirm the setting.
2. Depending on your settings, any external devices or docks may be configured to make the main screen blank when in use. Disconnect them to confirm if this is the case.
3. Press Ctrl + Win + Shift + B. The screen may flicker as the video driver is reset.
4. Press and hold the power button until all the power and activity lights are off. Keep holding the button until the PC starts to boot. You may have to hold the button for 30 seconds or more.
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Hi NaJiJi, please try the below steps and get back to us with the results.
1. Using Windows Update or Samsung update, check for updates to the drivers for your device and install them.
2. You can also adjust the refresh rate.
Right-click the desktop and select Display Settings. Then, scroll down and click Advanced display settings. If the refresh rate listed does not match the maximum native refresh rate of the device, click Display adapter properties, then select the Monitor tab, and adjust the refresh rate to the maximum supported by the monitor.