I believe the GPU is soldered to the motherboard, I had similar issue as TS with my laptop and I've sent it in for RMA.

Due to CPU and GPU being soldered, I had the motherboard replaced for free since it is still under warranty by Lenovo.

I am looking for a new laptop and is considering Level51 or Illegear, but thanks to this thread, I'll avoid both and go for retail brands instead to save the hassle and trouble.

Please keep us updated TS.
You have saved a lot of potential buyers from having the same fate as you.

The CS reply and actions to resolve your problems were really uncalled for. Not something I'd expect from a 7k laptop.