r/DellXPS

I am not a computer guru, I don't know much about drivers, gpu, or things like that, so keep that in mind.... My laptop (XPS 15) is about 5 years old. Lately it's been overheating frequently. When I hear and feel it over heating disconnecting it from the power usually helps. Today it didn't, I got some blue screens, something drivers etc... It's happened before but normally I can get it back up and running relatively quickly, today was a little but more wonky.

I do have it back up and running now. Apart from the frequent overheating/drivers stuff it mostly works okay apart from the mousepad (finger pad?), it is not the greatest anymore.

I'm asking because I need to decide if I should budget for a new laptop soon, or if it's possible to get another 2 years out of it if I replace the battery?

I know no one can say for certain.

My XPS 15 7590 started having problems about 4–5 days ago. At first it would randomly shut down/restart and sometimes show BIOS corruption, Manufacturing Mode, missing Service Tag and different amber/white LED codes.
During these days I tried BIOS update/reset, reseating/swapping RAM, reseating SSD, different battery/without battery, Windows reinstall and Dell diagnostics (no errors).
For the last 2 days it has become much worse. Now when I turn it on:
● Screen stays completely black
● No Dell logo/BIOS appears
● Keyboard lights come on
● Caps Lock light comes on
● Fans run extremely fast and loud at maximum speed
● External monitor also gets no HDMI signal
Dell support suspects a motherboard failure.

Has anyone experienced this with an XPS 15 7590? Does this sound like a dead motherboard, or could another component cause these symptoms?