Power Supply outlet plug has signs of burn marks

I used this laptop for 3 to 4 years without any issues but once I started to use it more frequently for both Uni and personal use after about a year I started noticing burn traces on my outlet plug.

I then decided to substitute the power supply and outlet cable with an equivalent ISY power adapter. Seemed to work fine but after another 8 months or so my pc suddenly shut down after a month of many BOSD’s and never was able to boot back up. I tried removing the battery and wasn’t successful. I tried opening it up with my electrical engineer friend (since it was long over warranty) and we couldn’t see any clear indicators as to what happened so we assumed that something must have shorted on the motherboard. I have been hanging on to it as I was unsure if it is worth it to sell off my SSD and any other components. Also since it has a really nice 17” panel I was toying with the idea of building a monitor out of it. What do you guys think? Is any of this worth it? If so might you have some tips/tutorials on how to go about these types of re-purposing projects?

Thanks in Advance,

Marco