Dell XPS Plus 9320 blue screen and rebooting

[siuras676]

Hi everyone,
I have a Dell XPS 9320 in for repair, and the machine has a strange issue.

First, a bit of history: the laptop came in after liquid damage and was completely dead. I've repaired all the broken traces, replaced the damaged components, and it now powers on.

However, it's now showing a Windows blue screen related to hardware (as seen in the picture), along with another Dell error I've never seen before.

Has anyone encountered this issue on a Dell machine before and could point me in the right direction? I've checked the power rails around the areas affected by liquid damage, as well as the main rails according to the schematic, and they all seem fine.

Thanks for help.

[mon2]

First screen notes EC power rail failure. Check the RTC battery / VCC rails for the EC.

[siuras676]

Thanks - will check this tomorrow

[siuras676]

The voltage looks good; the chip is getting 3.3V. The RTC circuit seems to be okay too. Any other ideas? I tried a BIOS update, but the issue persists. The hardware test in the BIOS isn't showing any errors.

[siuras676]

I found the issue on this , CPU connections failure in my case.. Thanks for help.