cross-posted from: https://leminal.space/post/41823822

Hey everyone,

I’m having a weird issue with a Dell Latitude 7320 Detachable after replacing the battery.

Here’s what happened:

After installing the replacement battery, the device stopped booting.

The charging/power LED lights up when connected to USB-C power.

When pressing the power button, the keyboard and stylus light up.

After a few seconds, the power LED blinks twice and the device shuts down.

I switched back to the original battery, and the device actually managed to boot into Dell Diagnostics once.

After that, it stopped booting properly again.

At one point, the screen stayed black except for a thin horizontal white line across the entire top of the display. It remained powered on.

Now even that white line has disappeared.

I’m wondering if this could be a broken BIOS, maybe some controller issue.

The fact that it managed to enter Dell Diagnostics once with the original battery makes me think the motherboard might not be completely dead.

Is there a way to force BIOS recovery or reset it on this specific model?

Any ideas?

Thanks!