Windows 10: Monitor problem

I have a 4K monitor and it has worked perfectly since I bought it but this morning every time I hit on a new tab it shows up a two thirds blank screen see pic
I have tried rebooting the machine and even tried using Settings in Personalisation to change the theme but nothing seems to work .
Any ideas anyone please?

:)

 

i have a problem to connect 2 monitors.

Hi Ron,

Thank you for posting your query in Microsoft Community.

• What changes did you make in the BIOS? As making the changes in the BIOS is only recommended by Microsoft if done by the manufacturer.
  

• How are you connecting to the 2nd monitor?

I suggest you to follow the steps from this article below:

http://windows.microsoft.com/en-IN/windows-8/how-connect-multiple-monitors

[Applies to Windows 10 as well]

Regards.

 

Overclocking / Undervolting guide for Vega 56 or 64?

Here's a quick laundry list:

List of software to use for overclocking and testing
Examples:
Wattman (and how to find and use it, like an overview, including profiles)
Unigine Valley or Heaven (use this for quick testing while changing settings in Wattman and checking for stability / artifacts) ...just suggesting this
How to monitor cores / mem speeds and temps during testing (I've seen screen overlays, and others using GPUz)

Step-by step overclocking in Wattman
Fan speeds
Power limit
Temp limit
Voltages
Core speeds
Memory speeds

 

Computer problem with monitor

Hi,

There are many possible reasons this issue is happening, like problem with monitor, cables, hardware. We'd like to ask few questions below to isolate the issue:

• Have you tried using a different monitor?
  
• Have you tried using a different set of cables?
  
• What other troubleshooting step have you done so far?

We'll be waiting for your response.