BSOD IRQL Occurs when Plugging in/out power supply

New drivers are installed. What power plans are available to you and what one are you using?

powercfg /list from a Command Prompt will show you.

Please fill out your System Specs:

See here: System Specs - Fill in at Ten Forums

The more information you can provide the better.

Also, it looks like there is a BIOS update for your T420s laptop. You have a lot of these Event Viewer entries:

Code:

Event[2800]:
  Log Name: System
  Source: ACPI
  Date: 2018-01-23T19:02:13.092
  Event ID: 15
  Task: N/A
  Level: Warning
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: DESKTOP-062859K
  Description: 
: The embedded controller (EC) returned data when none was requested. The BIOS might be trying to access the EC without synchronizing with the operating system. This data will be ignored. No further action is necessary; however, you should check with your computer manufacturer for an upgraded BIOS.

so it would be a good idea to update to the latest available BIOS :

Attachment 174110

I found it here which I think is the right place: T420s Laptop (ThinkPad)

You are using the High Performance power scheme which means there should be no reduction of power to any of your devices, that's good. I was expecting to see one of the other schemes set active and maybe that being the cause of the problem you are seeing but it doesn't look like that's the case.

Maybe updating the BIOS will help.

BIOS has nothing to do with the Operating System, strictly hardware. As I showed, there is a newer BIOS update than the one you currently have installed.

Not sure whats happening wit the Centrino driver. Dump shows the Tue Jan 6 11:19:19 2015, same as before, unless that file in the new driver did not get updated, which happens some times.

if you already updated successfully then updating again will not make any difference. Dumps still show the same driver problems, LAN and WiFi.

Let's try enabling Driver Verifier, see if that shows us anything different.

===================================================
Driver Verifier is a diagnostic tool built into Windows 10, it is designed to verify both native Microsoft drivers and third party drivers. Driver Verifier's verification process involves putting heavy stress on drivers with the intention of making bad, outdated, incompatible or misbehaving drivers fail. The required result is a BSOD (Blue Screen of Death) which will generate a crash dump for debugging purposes.
Machines exposed to Driver Verifier will run very sluggishly due to the stress being applied to the drivers.

Driver Verifier - Enable and Disable in Windows 10

Pay close attention to PART TWO and make sure the correct boxes are checked.

Warning:
It is not advised to run Driver Verifier for more than 48 hours at a time. Disable Driver Verifier after 48 hours or after receiving a BSOD, whichever happens soonest.

Always create a Restore Point prior to enabling Driver Verifier.

What we're looking for is a verifier generated BSOD with a mini dump that will tell us what driver caused it. If you get a BSOD, run the new log collector v2-beta08.zip and upload the resulting zip file. It collects similar data.

Make sure you understand how to disable Driver Verifier.