I undocked it, which rebooted the laptop, which I thought was weird. At this point I noticed that every time I docked or undocked the laptop, it caused the laptop to reboot. I had a T420 with a docking station and that never happened before.
When I plugged the laptop in directly, I noticed it no longer charges. If I plug the cord directly into the laptop, it's like nothing is plugged in.
If I put the laptop back in the dock, it will say it's charging, but it's not. The battery lost all its charge, and now my laptop no longer boots.
I went through tech support and they had me reset my battery and all that and nothing worked. I even tried a new power cord.
My question is:
1) why did my dock cause my laptop to reboot every time I docked/undocked it?
2) Could the dock really cause my laptop to completely stop charging? It's a 40A1 docking station. I am using a genuine 20V adapter with it. The FRU is FRU 04W3948.
I am getting a replacement T470 but I am worried I am going to ruin that one too and would really appreciate some advice. Thank you!
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