I broke the screen of my Dell XPS 13 (2020) by managing to trip over the cable so hard the laptop fell from my desk.

Dell support wasn't particularly helpful in quoting me a price before doing the replacement, so I decided to do it myself. No biggy, I've done this stuff before, and I replaced it without any issues.

Except of course there's an issue now. The big LED on the laptop keeps giving me the error code for a broken display (2 Yellow, 7 White blinks). The new display works without issue and funnily enough, the blinking only happens when I run it in battery mode or with a power supply other than the original Dell one. (Sometimes it's fine if I start with the power supply connected and then remove it, sometimes it's not...)

I have no idea why this is happening. I triple checked the display connection, I ran diagnostics, and it can't find anything, but the blinking won't go away. Since the laptop works perfectly fine, at this point I really just want to get rid of the blinking. So that's my question: Is there a way to just disable these blinking error codes? I've scoured the BIOS, but I can't find anything.

I know I'm potentially risking missing a different issue (if disabling is even possible) but I'm really, really annoyed, and I'm willing to live with this. Would resetting CMOS by removing the battery be enough?

I bought the laptop in 2021, and the warranty is now expired otherwise I'd have immediately started the RMA process.

I put it on the charger overnight and woke the next morning to work on the laptop. It blue screened once, and booted back up. After a minute or two on the desktop, it blue screened again and upon rebooting it gave me 2 yellow, 4 white blinks.

This indicates a memory failure. Is there any way to perform any other on-board diagnostic to confirm?

Failing this, am I stuck with a paperweight? A replacement mobo (since the memory modules are soldered...) seems like just throwing good money after bad, and I'm not sure I'm keen on sticking with Dell after this. It's supremely disappointing to have a laptop die after such a short period of time.

If there's no other repair I can pursue, is there anything I can do to salvage parts out of it? I'd hate to contribute to the e-waste situation with an otherwise immaculate device. It'd be nice to use the screen for example.

Otherwise, I guess my best bet would be to sell for parts or scrap?