Many reasons might lead to monitor connection problems. Some of them are easy to fix, while others might require you to replace either the monitor or your cables. However, when you cannot detect your external monitor after your computer wakes up from sleep, it does not mean that the monitor could be facing a technical issue. This is something that you can handle on your own without hiring anyone for help. You could be surprised that this problem can be fixed by simply disconnecting your monitor from the power supply or something as simple as checking your connection cables. That notwithstanding, there are different ways of fixing your external monitor if it is not detected after sleep.

Why is my second monitor not waking up after sleep?

You might be left frustrated finding that your second monitor does not come on after your computer wakes up from sleep. Unfortunately, there is no universal cause for this problem. Sometimes, it could be an issue with your drivers, the cables connecting the external monitor to your computer, power management, the monitor’s refresh rates, or even your project mode, among others. All these issues might lead to problems with your external monitor not being detected after sleep.

What do I do if my second monitor is not detected after sleep?

2. Roll back to a previous display driver

If the Roll Back Driver option is grayed out, that means you don’t have an older driver to load and you should skip this solution. SPONSORED

Quick tip:

If rolling back doesn’t work, try an automated solution to find a recent version of the needed driver and update it, this might fix the issue. DriverFix can be helpful in this case because it scans all your device drivers and searches for the latest updates. Where applicable, it will enable the update instantly, or if it is the case, it will download the missing ones. This is an adequate driver monitoring tool because of its remarkable features. It will help you keep track of all your device drivers and mantain them updated at all times.

3. Set the same refresh rates on your monitors

4. Disable deep sleep on your monitor

5. Restart the graphics driver

How do I wake up my third monitor?

Just like with your second external monitor, you might also face issues with your third monitor if you have more than two – the same problem that happens with an external monitor not being detected after sleep.  You can fix the third monitor not being detected by reconnecting the monitor, changing the display settings in the Control Panel, checking for updates, getting an ISO version of Windows, and disabling the integrated Intel card, among others. Looking at the solutions shared here, you can see that they are easy fixes that you can handle on your own. You may also be interested in reading our guide on what to do if the external monitor turns off randomly. If you have any problems with one of the solutions, let us know in the comment section below. Additionally, let us know about any other solution that helped you fix the problem with your external monitor not being detected after sleep.

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