Hello. My name is Ramees.
Welcome to JustAnswer.com. I look forward to assisting you.
I’m sorry to hear that you're having trouble with your adapter. I know that can be frustrating.
Hopefully, we can get this resolved quickly.
Basic display output adapters contains IC chips which converts serial data from a USB port to parallel data signal to the VGA.
And some are prone to damage under high temperature or sudden power spikes.
I am sorry but according to your description, your adapter has failed.
You can try connecting the adapter to a different port of your computer to make sure of it.
I am very sorry to provide you with this bad news,
please understand that I do have a professional obligation to provide JustAnswer.com customers with correct answers,
even when the answer is not favorable to the customer.
If you are interested, I can send you links online to purchase the correct replacement adapter for you.
Please let me know.