m15 R5, RTX 3060, display and outgoing display signal suddenly stopped working

Hi everyone,

I have been using this laptop for over a year now and never had this problem occur before. Earlier this week, when connected to an external monitor via the USB 3.2 Gen 2 Type-C port on the back with DisplayPort, the image suddenly froze for a few seconds and went to black, stating no signal was coming through.

These are the things I tried next:
1) Tried HDMI port instead, same result.

2) Tried laptop monitor instead black screen.

3) Reset laptop, noticed black screen and 2 amber 7 blue error code which means "Display failure - SBIOS message" according to https://www.dell.com/support/manuals/en-ca/alienware-m15-r5-laptop/alienware-m15-ryzen-edition-r5-service-manual/system-diagnostic-lights?guid=guid-5e7a486c-39a9-40d5-8e4b-08df6fb256b6&lang=en-us.

4) Reset laptop and held onto "D" for Dell display test, noticed very faint changing of color on screen from red, blue, etc. but it was extremely dim, nearly black.

5) Unplugged battery inside laptop and held onto the power button to drain excess charge, no change.

6) Took to repair shop, agreed that there was no physical damage to the monitor and that it was odd that both the laptop display and outgoing signal was affected, suggesting it may be a faulty motherboard.

This appeared to have happened out of the blue. There weren't any recent hardware changes to the laptop or to the activities I typically do on the laptop (just videogames and schoolwork.)

Any thoughts?