How to fix my Kamvas 13 no signal black screen problem?

Having issues with your Kamvas 13?

Here are some of the most commons issues and the steps to solve them:

1. No signal or flash screen issue:
   • The reason your tablet shows no signal or the screen is flashing when connected to your computer or phone may be due to insufficient power supply.
   • To solve this issue, connect your tablet to an external 5V power supply or by using a 3-in-1 5V power supply.
     
     5V Power Supply:
     3-in-1 5V Power Supply:
     
2. When the red USB-A end of the 3-in-1 cable is connected to a 5V power supply but the logo does not appear and the LED light around the tablet's power button will not turn on:
   • Connect the USB-C end of your 3-in-1 cable to the lower USB-C port on your tablet (the port that is supposedly for the USB-C to USB-C cable) and check if the logo appears and if the tablet's LED light will turn on to confirm whether the 3-in-1 cable power supply is working.
     1. If the logo will not appear and the power button's LED light will not turn on, then the issue is with the 3-in-1 cable. Thus, the 3-in-1 cable needs to be replaced.
     2. If the logo appears and the power button's LED light will turn on, it means that the upper USB-C port of the tablet is not working. Thus, the tablet needs to be replaced.
3. When the red USB-A end of the 3-in-1 cable is connected to a 5V power supply but a "no signal" error appears:
   • Confirm whether the computer's HDMI port works normally by connecting other monitors to the said port If the other monitors work fine, the 3-in-1 cable may be broken and needs to be replaced.
   • If in case the new 3-in-1 cable still results in a "no signal issue", then the tablet's USB-C port is damaged so the tablet needs to be replaced.
4. When the Kamvas 13 is connected to the computer a "USB Device Cannot Be Recognized" error appears (as shown below):
   
   1. This error may be caused by an insufficient power supply. The red USB-A end of the 3-in-1 cable can be connected to a 5V power supply to resolve this issue.
      
   2. This may be caused by a defective USB port on your computer. Try connecting to another USB port.
   3. Try connecting your tablet to another computer to check if the same problem occurs.
   4. This error may also be caused by a defective 3-in-1 cable. You can use a mobile phone to check whether the connection is normal and confirm whether the driver board is normal. If it can be used normally, the 3-in-1 cable can be added.
   5. If the 3-in-1 cable has been replaced and the problem persists, the issue may be caused by a defective USB-C port.