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My 780M came with "80.04.92.00.02 (P2053-0001)".

It was sold as an Alienware 780M.

That's utter non-sense, AS5 has never been conductive and will never be. It is slightly capacitve, but you'll have a hard time damaging anything because of this.

I really don't see why so many people say AS5 is conductive, it's not a liquid metal paste.

I guess it's one of those lies that's been repeated so many times, people think it's true.

I found MX-2 to be slightly better temperature-wise than AS5, plus it seemed easier to apply; so I never looked back after switching from AS5 to MX-2.

I installed a 780M into my 16F3, without issue.

However, there seemed to be some form of incompatibility with the 30R BIOS; it was extremely unstable with the 780M. I had to roll back to 30P.

The odd thing is that the same BIOS had not problems with the 680M I had before getting the 780M.

I use IC Diamond. It's pretty viscous, so you may have to heat up the tube to spread it easily.

I avoid AS5 since it's conductive. Before IC diamond, I used Arctic cooling.

I tried pretty much every combination of options for disabling the iGPU in the 16F3's BIOS, all of them led to the display not working.

Definitely think the port is muxed.