BSOD when pc is plugged in?

[Microsoft Windows]

I've had this pc for four years now, and recently i've been getting a lot of blue screens but only when my laptop is plugged in since around december. The error messages range from PAGE_FAULT_IN_NONPAGED_AREA, CRITICAL_PROCESS_DIED, CLOCK_WATCHDOG_TIMEOUT etc. I've also recently changed the keyboard on this pc (around november) with dell support because certain keys were not working. Any help is appreciated.

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