Windows 10: Monitor quit working

I had an extra monitor plugged in for months, then it just went black and read "Input Not Supported". I checked the display settings and accidentally clicked the "just show on monitor 2", now both screens are black when plugged into each other. Help please! The computer and monitor work great, just not plugged into each other.

:)

 

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

 

My second monitor quit working after the latest update with Windows 10

Hi Jenny,

Your monitors may not be compatible with the latest update and causing this issue. Please tell us more about it by answering the following questions:

• What is exactly happening with your monitor?
• When was the latest update installed?
• What troubleshooting steps have you done so far?

We're looking forward to your response.

 

Windows 10 Update - Now my dual monitors do not work

Hi,





One of the possible reasons why Windows 10 was unable to detect your dual monitor is an outdated or incompatible graphics driver. To best address your concern, we need you to answer the following questions:

• Which Windows 10 build are you using?
• Have you already tried performing the troubleshooting steps suggested by
  Mauro Cavallin on June 16, 2017?
• Are both of the monitors not working just like what the original poster was experiencing? If yes, have you tried disconnecting one of the monitors? What was the outcome?
• What troubleshooting steps have you done so far?

We will be waiting for your response.