Windows 10: After power outage second monitor won't detect signal.

Discus and support After power outage second monitor won't detect signal. in Windows 10 Software and Apps to solve the problem; After the power outage i turned my pc on and only my main monitor is working. I tried pretty much everything and nothing works. The second monitor is... Discussion in 'Windows 10 Software and Apps' started by Kryštof Šrámek, Jul 16, 2024.

  1. KRYšTOF ŠRáMEK
    Kryštof Šrámek Win User

    After power outage second monitor won't detect signal.


    After the power outage i turned my pc on and only my main monitor is working. I tried pretty much everything and nothing works. The second monitor is quite older and my pc is a bit newer so i had to use VGA to DisplayPort converter and it was working fine for over a year. The main monitor is just HDMI. The second monitor just says No Signal Detected!. I tried to plug it in the motherboards DP still nothing. My graphics card has 3 DisplayPorts and 1 HDMI so i tried the other 2 DPs and still nothing. Can someone please help me so i dont have to throw the monitor out and buy a new one?My specsRyz

    :)
     
    Kryštof Šrámek, Jul 16, 2024
    #1
  2. PETERSTILESXZ
    PeterStilesXZ Win User

    Second monitor not detected windows 10

    What is particularly strange is that windows 10 detects the second monitor when it is powered off, i.e. when it is only connected by the dvi signal cable. As soon as i plug in the power cord and switch on the second monitor, it disapoears from my display
    settings.
     
    PeterStilesXZ, Jul 16, 2024
    #2
  3. JANET BRANDARES
    Janet Brandares Win User
    windows 11 cannot detect my second monitor

    Windows 11 cannot detect my second monitor. Help. I did all the suggested troubleshooting steps but nothing seems to work.
     
    Janet Brandares, Jul 16, 2024
    #3
  4. NICKCHAT7
    nickchat7 Win User

    After power outage second monitor won't detect signal.

    Second monitor (TV) is plugged in, detected by Windows, but no signal

    Today I purchased a DP -> HDMI cable to hook up from my PC’s NVIDIA GEFORCE RTX 2060 Super to a Toshiba 50LF621U19 Amazon Fire TV. DP end in the graphics card, HDMI end on the side of the TV, and alas, no signal.

    Windows still detects the TV and interprets that a second monitor is present - the mouse can move to the second unviewable screen and do what it wants, and be brought back to the main monitor. Display settings allow me to tweak all the settings for the TV
    display but none of them make a signal appear.

    Cable isn’t an issue - connects to other screens and displays them just fine. Computer shouldn’t be an issue either if it detects the TV and lets me configure the display that isn’t appearing. Computers have been able to connect to this TV just fine in the
    past, but now this one is having issues.

    I’ve snooped around quite a few threads on the internet and found little to help my case here. Any suggestions?

    The main monitor is an ASUS VP249QGR, 1080p @ 144Hz by the way.
     
    nickchat7, Jul 16, 2024
    #4
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After power outage second monitor won't detect signal.

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