AVerMedia: Troubleshooting steps for “device is not detected”/ "no signal":

Before we check below points, please ensure your application software (notes: RECentral, OBS...etc) and driver up to date:

1. OS system: may we know your OS (Windows or Mac)? For example, we recommend you use 4K product on Window 10.

2. Device manager on PC:

Please head into: computer management> device management >sound, video, and game controller





If any yellow signal shows right behind, please right click the mouse and let us know the numerical error code.


*Code 39*: Please ensure whether or not you install the correct driver.

*Code 52*: The driver error code 52 refers to that Windows cannot verify the digital signature for the drivers required for this device. Probably the driver installed on your computer is signed incorrectly. 
https://drive.google.com/open?id=1_qO4sueMVs9zHftHKA1lJxX9fTUqaeWU
https://www.drivereasy.com/knowledge/solved-driver-error-code-52/

3. Capture screen 

3-1. Could you share the images and videos you were talking about? For example, what did you see on the capture screen of RECentral 4 /OBS studio, such as "no signal"/ no device detected ...etc.

3-2 black screen / copy right protected


Please refer to the below troubleshooting guide:
https://drive.google.com/open?id=1jZjYokHIOztqf79tn-zaxXq7ViyJ2iYRVRm8jHGEUD4


3-3 Device are occupied: 




Please ensure other third software are closed (e.g., OBS studio, skype, google chrome)

If your situation is different above, please send us a numerical error code for our study.
(URL: https://www.avermedia.com/tw/support/technical )


3-4 no signal

Can you go over your setup for us? How is the input source wired into your Avermedia device? For example, are you using the passthrough of the GC553, or is it setup as a clone or duplicate of your main display?

What sort of signal are you trying to use with the card? 1080p 60hz, 1440p 144hz, 4K 60hz, etc

Suppose all connections are firm and well connected without via adapter or converter