I am sorry to hear you are having problems but let me help you with your query.
You have done great by doing the steps mentioned; however, I would like you to try some other recommendations:
1. Uninstall the current graphics driver by following the ways at the following link:
2. Install the latest graphics drivers for your controller at the following link:
3. Even though you have tested different cable, Intel® recommends using direct connection (no adapters) because using these devices can affect the performance or the video signals.
If you are using the cable without adapters and issue persists, I recommend you contacting the computer manufacture for them to check the system and replace it if necessary.